2720221780

素因数分解:

$2^2\times 5^1\times {\mathrm{4211}}^1\times {\mathrm{32299}}^1$

素因数の和:36519

約数の個数: 24

約数和(自身を含む): 5713999200

約数和(自身を除く): 2993777420

約数列:

[1, 2, 4, 5, 10, 20, 4211, 8422, 16844, 21055, 32299, 42110, 64598, 84220, 129196, 161495, 322990, 645980, 136011089, 272022178, 544044356, 680055445, 1360110890, 2720221780]

約数ペア:

[(1, 2720221780), (2, 1360110890), (4, 680055445), (5, 544044356), (10, 272022178), (20, 136011089), (4211, 645980), (8422, 322990), (16844, 161495), (21055, 129196), (32299, 84220), (42110, 64598)]