87704240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{499}}^1$

素因数の和:551

約数の個数: 80

約数和(自身を含む): 221340000

約数和(自身を除く): 133635760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 499, 520, 676, 845, 998, 1040, 1352, 1690, 1996, 2197, 2495, 2704, 3380, 3992, 4394, 4990, 6487, 6760, 7984, 8788, 9980, 10985, 12974, 13520, 17576, 19960, 21970, 25948, 32435, 35152, 39920, 43940, 51896, 64870, 84331, 87880, 103792, 129740, 168662, 175760, 259480, 337324, 421655, 518960, 674648, 843310, 1096303, 1349296, 1686620, 2192606, 3373240, 4385212, 5481515, 6746480, 8770424, 10963030, 17540848, 21926060, 43852120, 87704240]

約数ペア:

[(1, 87704240), (2, 43852120), (4, 21926060), (5, 17540848), (8, 10963030), (10, 8770424), (13, 6746480), (16, 5481515), (20, 4385212), (26, 3373240), (40, 2192606), (52, 1686620), (65, 1349296), (80, 1096303), (104, 843310), (130, 674648), (169, 518960), (208, 421655), (260, 337324), (338, 259480), (499, 175760), (520, 168662), (676, 129740), (845, 103792), (998, 87880), (1040, 84331), (1352, 64870), (1690, 51896), (1996, 43940), (2197, 39920), (2495, 35152), (2704, 32435), (3380, 25948), (3992, 21970), (4394, 19960), (4990, 17576), (6487, 13520), (6760, 12974), (7984, 10985), (8788, 9980)]