21258770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{3803}}^1$

素因数の和:3866

約数の個数: 32

約数和(自身を含む): 42178752

約数和(自身を除く): 20919982

約数列:

[1, 2, 5, 10, 13, 26, 43, 65, 86, 130, 215, 430, 559, 1118, 2795, 3803, 5590, 7606, 19015, 38030, 49439, 98878, 163529, 247195, 327058, 494390, 817645, 1635290, 2125877, 4251754, 10629385, 21258770]

約数ペア:

[(1, 21258770), (2, 10629385), (5, 4251754), (10, 2125877), (13, 1635290), (26, 817645), (43, 494390), (65, 327058), (86, 247195), (130, 163529), (215, 98878), (430, 49439), (559, 38030), (1118, 19015), (2795, 7606), (3803, 5590)]