257139540

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{467}}^1$

素因数の和:531

約数の個数: 288

約数和(自身を含む): 981227520

約数和(自身を除く): 724087980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 23, 28, 30, 35, 36, 38, 42, 45, 46, 57, 60, 63, 69, 70, 76, 84, 90, 92, 95, 105, 114, 115, 126, 133, 138, 140, 161, 171, 180, 190, 207, 210, 228, 230, 252, 266, 276, 285, 315, 322, 342, 345, 380, 399, 414, 420, 437, 460, 467, 483, 532, 570, 630, 644, 665, 684, 690, 798, 805, 828, 855, 874, 934, 966, 1035, 1140, 1197, 1260, 1311, 1330, 1380, 1401, 1449, 1596, 1610, 1710, 1748, 1868, 1932, 1995, 2070, 2185, 2335, 2394, 2415, 2622, 2660, 2802, 2898, 3059, 3220, 3269, 3420, 3933, 3990, 4140, 4203, 4370, 4670, 4788, 4830, 5244, 5604, 5796, 5985, 6118, 6538, 6555, 7005, 7245, 7866, 7980, 8406, 8740, 8873, 9177, 9340, 9660, 9807, 10741, 11970, 12236, 13076, 13110, 14010, 14490, 15295, 15732, 16345, 16812, 17746, 18354, 19614, 19665, 21015, 21482, 23940, 26220, 26619, 27531, 28020, 28980, 29421, 30590, 32223, 32690, 35492, 36708, 39228, 39330, 42030, 42964, 44365, 45885, 49035, 53238, 53705, 55062, 58842, 61180, 62111, 64446, 65380, 75187, 78660, 79857, 84060, 88730, 91770, 96669, 98070, 106476, 107410, 110124, 117684, 124222, 128892, 133095, 137655, 147105, 150374, 159714, 161115, 177460, 183540, 186333, 193338, 196140, 204079, 214820, 225561, 248444, 266190, 275310, 294210, 300748, 310555, 319428, 322230, 372666, 375935, 386676, 399285, 408158, 451122, 483345, 532380, 550620, 558999, 588420, 612237, 621110, 644460, 676683, 745332, 751870, 798570, 816316, 902244, 931665, 966690, 1020395, 1117998, 1127805, 1224474, 1242220, 1353366, 1428553, 1503740, 1597140, 1836711, 1863330, 1933380, 2040790, 2235996, 2255610, 2448948, 2706732, 2794995, 2857106, 3061185, 3383415, 3673422, 3726660, 4081580, 4285659, 4511220, 5589990, 5714212, 6122370, 6766830, 7142765, 7346844, 8571318, 9183555, 11179980, 12244740, 12856977, 13533660, 14285530, 17142636, 18367110, 21428295, 25713954, 28571060, 36734220, 42856590, 51427908, 64284885, 85713180, 128569770, 257139540]

約数ペア:

[(1, 257139540), (2, 128569770), (3, 85713180), (4, 64284885), (5, 51427908), (6, 42856590), (7, 36734220), (9, 28571060), (10, 25713954), (12, 21428295), (14, 18367110), (15, 17142636), (18, 14285530), (19, 13533660), (20, 12856977), (21, 12244740), (23, 11179980), (28, 9183555), (30, 8571318), (35, 7346844), (36, 7142765), (38, 6766830), (42, 6122370), (45, 5714212), (46, 5589990), (57, 4511220), (60, 4285659), (63, 4081580), (69, 3726660), (70, 3673422), (76, 3383415), (84, 3061185), (90, 2857106), (92, 2794995), (95, 2706732), (105, 2448948), (114, 2255610), (115, 2235996), (126, 2040790), (133, 1933380), (138, 1863330), (140, 1836711), (161, 1597140), (171, 1503740), (180, 1428553), (190, 1353366), (207, 1242220), (210, 1224474), (228, 1127805), (230, 1117998), (252, 1020395), (266, 966690), (276, 931665), (285, 902244), (315, 816316), (322, 798570), (342, 751870), (345, 745332), (380, 676683), (399, 644460), (414, 621110), (420, 612237), (437, 588420), (460, 558999), (467, 550620), (483, 532380), (532, 483345), (570, 451122), (630, 408158), (644, 399285), (665, 386676), (684, 375935), (690, 372666), (798, 322230), (805, 319428), (828, 310555), (855, 300748), (874, 294210), (934, 275310), (966, 266190), (1035, 248444), (1140, 225561), (1197, 214820), (1260, 204079), (1311, 196140), (1330, 193338), (1380, 186333), (1401, 183540), (1449, 177460), (1596, 161115), (1610, 159714), (1710, 150374), (1748, 147105), (1868, 137655), (1932, 133095), (1995, 128892), (2070, 124222), (2185, 117684), (2335, 110124), (2394, 107410), (2415, 106476), (2622, 98070), (2660, 96669), (2802, 91770), (2898, 88730), (3059, 84060), (3220, 79857), (3269, 78660), (3420, 75187), (3933, 65380), (3990, 64446), (4140, 62111), (4203, 61180), (4370, 58842), (4670, 55062), (4788, 53705), (4830, 53238), (5244, 49035), (5604, 45885), (5796, 44365), (5985, 42964), (6118, 42030), (6538, 39330), (6555, 39228), (7005, 36708), (7245, 35492), (7866, 32690), (7980, 32223), (8406, 30590), (8740, 29421), (8873, 28980), (9177, 28020), (9340, 27531), (9660, 26619), (9807, 26220), (10741, 23940), (11970, 21482), (12236, 21015), (13076, 19665), (13110, 19614), (14010, 18354), (14490, 17746), (15295, 16812), (15732, 16345)]