257830720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:181

約数の個数: 224

約数和(自身を含む): 749076480

約数和(自身を除く): 491245760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 47, 56, 62, 64, 70, 79, 80, 94, 112, 124, 140, 155, 158, 160, 188, 217, 224, 235, 248, 280, 310, 316, 320, 329, 376, 395, 434, 448, 470, 496, 553, 560, 620, 632, 658, 752, 790, 868, 940, 992, 1085, 1106, 1120, 1240, 1264, 1316, 1457, 1504, 1580, 1645, 1736, 1880, 1984, 2170, 2212, 2240, 2449, 2480, 2528, 2632, 2765, 2914, 3008, 3160, 3290, 3472, 3713, 3760, 4340, 4424, 4898, 4960, 5056, 5264, 5530, 5828, 6320, 6580, 6944, 7285, 7426, 7520, 8680, 8848, 9796, 9920, 10199, 10528, 11060, 11656, 12245, 12640, 13160, 13888, 14570, 14852, 15040, 17143, 17360, 17696, 18565, 19592, 20398, 21056, 22120, 23312, 24490, 25280, 25991, 26320, 29140, 29704, 34286, 34720, 35392, 37130, 39184, 40796, 44240, 46624, 48980, 50995, 51982, 52640, 58280, 59408, 68572, 69440, 74260, 78368, 81592, 85715, 88480, 93248, 97960, 101990, 103964, 105280, 115103, 116560, 118816, 129955, 137144, 148520, 156736, 163184, 171430, 176960, 195920, 203980, 207928, 230206, 233120, 237632, 259910, 274288, 297040, 326368, 342860, 391840, 407960, 415856, 460412, 466240, 519820, 548576, 575515, 594080, 652736, 685720, 783680, 805721, 815920, 831712, 920824, 1039640, 1097152, 1151030, 1188160, 1371440, 1611442, 1631840, 1663424, 1841648, 2079280, 2302060, 2742880, 3222884, 3263680, 3683296, 4028605, 4158560, 4604120, 5485760, 6445768, 7366592, 8057210, 8317120, 9208240, 12891536, 16114420, 18416480, 25783072, 32228840, 36832960, 51566144, 64457680, 128915360, 257830720]

約数ペア:

[(1, 257830720), (2, 128915360), (4, 64457680), (5, 51566144), (7, 36832960), (8, 32228840), (10, 25783072), (14, 18416480), (16, 16114420), (20, 12891536), (28, 9208240), (31, 8317120), (32, 8057210), (35, 7366592), (40, 6445768), (47, 5485760), (56, 4604120), (62, 4158560), (64, 4028605), (70, 3683296), (79, 3263680), (80, 3222884), (94, 2742880), (112, 2302060), (124, 2079280), (140, 1841648), (155, 1663424), (158, 1631840), (160, 1611442), (188, 1371440), (217, 1188160), (224, 1151030), (235, 1097152), (248, 1039640), (280, 920824), (310, 831712), (316, 815920), (320, 805721), (329, 783680), (376, 685720), (395, 652736), (434, 594080), (448, 575515), (470, 548576), (496, 519820), (553, 466240), (560, 460412), (620, 415856), (632, 407960), (658, 391840), (752, 342860), (790, 326368), (868, 297040), (940, 274288), (992, 259910), (1085, 237632), (1106, 233120), (1120, 230206), (1240, 207928), (1264, 203980), (1316, 195920), (1457, 176960), (1504, 171430), (1580, 163184), (1645, 156736), (1736, 148520), (1880, 137144), (1984, 129955), (2170, 118816), (2212, 116560), (2240, 115103), (2449, 105280), (2480, 103964), (2528, 101990), (2632, 97960), (2765, 93248), (2914, 88480), (3008, 85715), (3160, 81592), (3290, 78368), (3472, 74260), (3713, 69440), (3760, 68572), (4340, 59408), (4424, 58280), (4898, 52640), (4960, 51982), (5056, 50995), (5264, 48980), (5530, 46624), (5828, 44240), (6320, 40796), (6580, 39184), (6944, 37130), (7285, 35392), (7426, 34720), (7520, 34286), (8680, 29704), (8848, 29140), (9796, 26320), (9920, 25991), (10199, 25280), (10528, 24490), (11060, 23312), (11656, 22120), (12245, 21056), (12640, 20398), (13160, 19592), (13888, 18565), (14570, 17696), (14852, 17360), (15040, 17143)]