64657940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{104287}}^1$

素因数の和:104327

約数の個数: 24

約数和(自身を含む): 140163072

約数和(自身を除く): 75505132

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 104287, 208574, 417148, 521435, 1042870, 2085740, 3232897, 6465794, 12931588, 16164485, 32328970, 64657940]

約数ペア:

[(1, 64657940), (2, 32328970), (4, 16164485), (5, 12931588), (10, 6465794), (20, 3232897), (31, 2085740), (62, 1042870), (124, 521435), (155, 417148), (310, 208574), (620, 104287)]