21028040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47791}}^1$

素因数の和:47813

約数の個数: 32

約数和(自身を含む): 51615360

約数和(自身を除く): 30587320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47791, 95582, 191164, 238955, 382328, 477910, 525701, 955820, 1051402, 1911640, 2102804, 2628505, 4205608, 5257010, 10514020, 21028040]

約数ペア:

[(1, 21028040), (2, 10514020), (4, 5257010), (5, 4205608), (8, 2628505), (10, 2102804), (11, 1911640), (20, 1051402), (22, 955820), (40, 525701), (44, 477910), (55, 382328), (88, 238955), (110, 191164), (220, 95582), (440, 47791)]