28921640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{65731}}^1$

素因数の和:65753

約数の個数: 32

約数和(自身を含む): 70990560

約数和(自身を除く): 42068920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 65731, 131462, 262924, 328655, 525848, 657310, 723041, 1314620, 1446082, 2629240, 2892164, 3615205, 5784328, 7230410, 14460820, 28921640]

約数ペア:

[(1, 28921640), (2, 14460820), (4, 7230410), (5, 5784328), (8, 3615205), (10, 2892164), (11, 2629240), (20, 1446082), (22, 1314620), (40, 723041), (44, 657310), (55, 525848), (88, 328655), (110, 262924), (220, 131462), (440, 65731)]