81201960

素因数分解:

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

素因数の和:517

約数の個数: 256

約数和(自身を含む): 323481600

約数和(自身を除く): 242279640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 23, 24, 27, 28, 30, 35, 36, 40, 42, 45, 46, 54, 56, 60, 63, 69, 70, 72, 84, 90, 92, 105, 108, 115, 120, 126, 135, 138, 140, 161, 168, 180, 184, 189, 207, 210, 216, 230, 252, 270, 276, 280, 315, 322, 345, 360, 378, 414, 420, 460, 467, 483, 504, 540, 552, 621, 630, 644, 690, 756, 805, 828, 840, 920, 934, 945, 966, 1035, 1080, 1242, 1260, 1288, 1380, 1401, 1449, 1512, 1610, 1656, 1868, 1890, 1932, 2070, 2335, 2415, 2484, 2520, 2760, 2802, 2898, 3105, 3220, 3269, 3736, 3780, 3864, 4140, 4203, 4347, 4670, 4830, 4968, 5604, 5796, 6210, 6440, 6538, 7005, 7245, 7560, 8280, 8406, 8694, 9340, 9660, 9807, 10741, 11208, 11592, 12420, 12609, 13076, 14010, 14490, 16345, 16812, 17388, 18680, 19320, 19614, 21015, 21482, 21735, 24840, 25218, 26152, 28020, 28980, 29421, 32223, 32690, 33624, 34776, 39228, 42030, 42964, 43470, 49035, 50436, 53705, 56040, 57960, 58842, 63045, 64446, 65380, 75187, 78456, 84060, 85928, 86940, 88263, 96669, 98070, 100872, 107410, 117684, 126090, 128892, 130760, 147105, 150374, 161115, 168120, 173880, 176526, 193338, 196140, 214820, 225561, 235368, 252180, 257784, 290007, 294210, 300748, 322230, 353052, 375935, 386676, 392280, 429640, 441315, 451122, 483345, 504360, 580014, 588420, 601496, 644460, 676683, 706104, 751870, 773352, 882630, 902244, 966690, 1127805, 1160028, 1176840, 1288920, 1353366, 1450035, 1503740, 1765260, 1804488, 1933380, 2030049, 2255610, 2320056, 2706732, 2900070, 3007480, 3383415, 3530520, 3866760, 4060098, 4511220, 5413464, 5800140, 6766830, 8120196, 9022440, 10150245, 11600280, 13533660, 16240392, 20300490, 27067320, 40600980, 81201960]

約数ペア:

[(1, 81201960), (2, 40600980), (3, 27067320), (4, 20300490), (5, 16240392), (6, 13533660), (7, 11600280), (8, 10150245), (9, 9022440), (10, 8120196), (12, 6766830), (14, 5800140), (15, 5413464), (18, 4511220), (20, 4060098), (21, 3866760), (23, 3530520), (24, 3383415), (27, 3007480), (28, 2900070), (30, 2706732), (35, 2320056), (36, 2255610), (40, 2030049), (42, 1933380), (45, 1804488), (46, 1765260), (54, 1503740), (56, 1450035), (60, 1353366), (63, 1288920), (69, 1176840), (70, 1160028), (72, 1127805), (84, 966690), (90, 902244), (92, 882630), (105, 773352), (108, 751870), (115, 706104), (120, 676683), (126, 644460), (135, 601496), (138, 588420), (140, 580014), (161, 504360), (168, 483345), (180, 451122), (184, 441315), (189, 429640), (207, 392280), (210, 386676), (216, 375935), (230, 353052), (252, 322230), (270, 300748), (276, 294210), (280, 290007), (315, 257784), (322, 252180), (345, 235368), (360, 225561), (378, 214820), (414, 196140), (420, 193338), (460, 176526), (467, 173880), (483, 168120), (504, 161115), (540, 150374), (552, 147105), (621, 130760), (630, 128892), (644, 126090), (690, 117684), (756, 107410), (805, 100872), (828, 98070), (840, 96669), (920, 88263), (934, 86940), (945, 85928), (966, 84060), (1035, 78456), (1080, 75187), (1242, 65380), (1260, 64446), (1288, 63045), (1380, 58842), (1401, 57960), (1449, 56040), (1512, 53705), (1610, 50436), (1656, 49035), (1868, 43470), (1890, 42964), (1932, 42030), (2070, 39228), (2335, 34776), (2415, 33624), (2484, 32690), (2520, 32223), (2760, 29421), (2802, 28980), (2898, 28020), (3105, 26152), (3220, 25218), (3269, 24840), (3736, 21735), (3780, 21482), (3864, 21015), (4140, 19614), (4203, 19320), (4347, 18680), (4670, 17388), (4830, 16812), (4968, 16345), (5604, 14490), (5796, 14010), (6210, 13076), (6440, 12609), (6538, 12420), (7005, 11592), (7245, 11208), (7560, 10741), (8280, 9807), (8406, 9660), (8694, 9340)]