64428940

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{13367}}^1$

素因数の和:13617

約数の個数: 24

約数和(自身を含む): 135872352

約数和(自身を除く): 71443412

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 13367, 26734, 53468, 66835, 133670, 267340, 3221447, 6442894, 12885788, 16107235, 32214470, 64428940]

約数ペア:

[(1, 64428940), (2, 32214470), (4, 16107235), (5, 12885788), (10, 6442894), (20, 3221447), (241, 267340), (482, 133670), (964, 66835), (1205, 53468), (2410, 26734), (4820, 13367)]