21226280

素因数分解:

$2^3\times 5^1\times {\mathrm{701}}^1\times {\mathrm{757}}^1$

素因数の和:1469

約数の個数: 32

約数和(自身を含む): 47890440

約数和(自身を除く): 26664160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 701, 757, 1402, 1514, 2804, 3028, 3505, 3785, 5608, 6056, 7010, 7570, 14020, 15140, 28040, 30280, 530657, 1061314, 2122628, 2653285, 4245256, 5306570, 10613140, 21226280]

約数ペア:

[(1, 21226280), (2, 10613140), (4, 5306570), (5, 4245256), (8, 2653285), (10, 2122628), (20, 1061314), (40, 530657), (701, 30280), (757, 28040), (1402, 15140), (1514, 14020), (2804, 7570), (3028, 7010), (3505, 6056), (3785, 5608)]