64918960

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{26177}}^1$

素因数の和:26221

約数の個数: 40

約数和(自身を含む): 155811456

約数和(自身を除く): 90892496

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 26177, 52354, 104708, 130885, 209416, 261770, 418832, 523540, 811487, 1047080, 1622974, 2094160, 3245948, 4057435, 6491896, 8114870, 12983792, 16229740, 32459480, 64918960]

約数ペア:

[(1, 64918960), (2, 32459480), (4, 16229740), (5, 12983792), (8, 8114870), (10, 6491896), (16, 4057435), (20, 3245948), (31, 2094160), (40, 1622974), (62, 1047080), (80, 811487), (124, 523540), (155, 418832), (248, 261770), (310, 209416), (496, 130885), (620, 104708), (1240, 52354), (2480, 26177)]