21920872

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{719}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 42681600

約数和(自身を除く): 20760728

約数列:

[1, 2, 4, 8, 37, 74, 103, 148, 206, 296, 412, 719, 824, 1438, 2876, 3811, 5752, 7622, 15244, 26603, 30488, 53206, 74057, 106412, 148114, 212824, 296228, 592456, 2740109, 5480218, 10960436, 21920872]

約数ペア:

[(1, 21920872), (2, 10960436), (4, 5480218), (8, 2740109), (37, 592456), (74, 296228), (103, 212824), (148, 148114), (206, 106412), (296, 74057), (412, 53206), (719, 30488), (824, 26603), (1438, 15244), (2876, 7622), (3811, 5752)]