21886280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{42089}}^1$

素因数の和:42113

約数の個数: 32

約数和(自身を含む): 53033400

約数和(自身を除く): 31147120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 42089, 84178, 168356, 210445, 336712, 420890, 547157, 841780, 1094314, 1683560, 2188628, 2735785, 4377256, 5471570, 10943140, 21886280]

約数ペア:

[(1, 21886280), (2, 10943140), (4, 5471570), (5, 4377256), (8, 2735785), (10, 2188628), (13, 1683560), (20, 1094314), (26, 841780), (40, 547157), (52, 420890), (65, 336712), (104, 210445), (130, 168356), (260, 84178), (520, 42089)]