64526620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78691}}^1$

素因数の和:78741

約数の個数: 24

約数和(自身を含む): 138812688

約数和(自身を除く): 74286068

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 78691, 157382, 314764, 393455, 786910, 1573820, 3226331, 6452662, 12905324, 16131655, 32263310, 64526620]

約数ペア:

[(1, 64526620), (2, 32263310), (4, 16131655), (5, 12905324), (10, 6452662), (20, 3226331), (41, 1573820), (82, 786910), (164, 393455), (205, 314764), (410, 157382), (820, 78691)]