82878640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79691}}^1$

素因数の和:79717

約数の個数: 40

約数和(自身を含む): 207517968

約数和(自身を除く): 124639328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 79691, 159382, 318764, 398455, 637528, 796910, 1035983, 1275056, 1593820, 2071966, 3187640, 4143932, 5179915, 6375280, 8287864, 10359830, 16575728, 20719660, 41439320, 82878640]

約数ペア:

[(1, 82878640), (2, 41439320), (4, 20719660), (5, 16575728), (8, 10359830), (10, 8287864), (13, 6375280), (16, 5179915), (20, 4143932), (26, 3187640), (40, 2071966), (52, 1593820), (65, 1275056), (80, 1035983), (104, 796910), (130, 637528), (208, 398455), (260, 318764), (520, 159382), (1040, 79691)]