54321920

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:126

約数の個数: 108

約数和(自身を含む): 138043584

約数和(自身を除く): 83721664

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 128, 148, 155, 160, 185, 248, 256, 296, 310, 320, 370, 496, 592, 620, 640, 740, 992, 1147, 1184, 1240, 1280, 1369, 1480, 1984, 2294, 2368, 2480, 2738, 2960, 3968, 4588, 4736, 4960, 5476, 5735, 5920, 6845, 7936, 9176, 9472, 9920, 10952, 11470, 11840, 13690, 18352, 19840, 21904, 22940, 23680, 27380, 36704, 39680, 42439, 43808, 45880, 47360, 54760, 73408, 84878, 87616, 91760, 109520, 146816, 169756, 175232, 183520, 212195, 219040, 293632, 339512, 350464, 367040, 424390, 438080, 679024, 734080, 848780, 876160, 1358048, 1468160, 1697560, 1752320, 2716096, 3395120, 5432192, 6790240, 10864384, 13580480, 27160960, 54321920]

約数ペア:

[(1, 54321920), (2, 27160960), (4, 13580480), (5, 10864384), (8, 6790240), (10, 5432192), (16, 3395120), (20, 2716096), (31, 1752320), (32, 1697560), (37, 1468160), (40, 1358048), (62, 876160), (64, 848780), (74, 734080), (80, 679024), (124, 438080), (128, 424390), (148, 367040), (155, 350464), (160, 339512), (185, 293632), (248, 219040), (256, 212195), (296, 183520), (310, 175232), (320, 169756), (370, 146816), (496, 109520), (592, 91760), (620, 87616), (640, 84878), (740, 73408), (992, 54760), (1147, 47360), (1184, 45880), (1240, 43808), (1280, 42439), (1369, 39680), (1480, 36704), (1984, 27380), (2294, 23680), (2368, 22940), (2480, 21904), (2738, 19840), (2960, 18352), (3968, 13690), (4588, 11840), (4736, 11470), (4960, 10952), (5476, 9920), (5735, 9472), (5920, 9176), (6845, 7936)]