28261640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64231}}^1$

素因数の和:64253

約数の個数: 32

約数和(自身を含む): 69370560

約数和(自身を除く): 41108920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64231, 128462, 256924, 321155, 513848, 642310, 706541, 1284620, 1413082, 2569240, 2826164, 3532705, 5652328, 7065410, 14130820, 28261640]

約数ペア:

[(1, 28261640), (2, 14130820), (4, 7065410), (5, 5652328), (8, 3532705), (10, 2826164), (11, 2569240), (20, 1413082), (22, 1284620), (40, 706541), (44, 642310), (55, 513848), (88, 321155), (110, 256924), (220, 128462), (440, 64231)]