64413940

素因数分解:

$2^2\times 5^1\times {\mathrm{887}}^1\times {\mathrm{3631}}^1$

素因数の和:4527

約数の個数: 24

約数和(自身を含む): 135459072

約数和(自身を除く): 71045132

約数列:

[1, 2, 4, 5, 10, 20, 887, 1774, 3548, 3631, 4435, 7262, 8870, 14524, 17740, 18155, 36310, 72620, 3220697, 6441394, 12882788, 16103485, 32206970, 64413940]

約数ペア:

[(1, 64413940), (2, 32206970), (4, 16103485), (5, 12882788), (10, 6441394), (20, 3220697), (887, 72620), (1774, 36310), (3548, 18155), (3631, 17740), (4435, 14524), (7262, 8870)]