81075880

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1889}}^1$

素因数の和:1966

約数の個数: 64

約数和(自身を含む): 193914000

約数和(自身を除く): 112838120

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 37, 40, 58, 74, 116, 145, 148, 185, 232, 290, 296, 370, 580, 740, 1073, 1160, 1480, 1889, 2146, 3778, 4292, 5365, 7556, 8584, 9445, 10730, 15112, 18890, 21460, 37780, 42920, 54781, 69893, 75560, 109562, 139786, 219124, 273905, 279572, 349465, 438248, 547810, 559144, 698930, 1095620, 1397860, 2026897, 2191240, 2795720, 4053794, 8107588, 10134485, 16215176, 20268970, 40537940, 81075880]

約数ペア:

[(1, 81075880), (2, 40537940), (4, 20268970), (5, 16215176), (8, 10134485), (10, 8107588), (20, 4053794), (29, 2795720), (37, 2191240), (40, 2026897), (58, 1397860), (74, 1095620), (116, 698930), (145, 559144), (148, 547810), (185, 438248), (232, 349465), (290, 279572), (296, 273905), (370, 219124), (580, 139786), (740, 109562), (1073, 75560), (1160, 69893), (1480, 54781), (1889, 42920), (2146, 37780), (3778, 21460), (4292, 18890), (5365, 15112), (7556, 10730), (8584, 9445)]