20115980

素因数分解:

$2^2\times 5^1\times {\mathrm{607}}^1\times {\mathrm{1657}}^1$

素因数の和:2273

約数の個数: 24

約数和(自身を含む): 42338688

約数和(自身を除く): 22222708

約数列:

[1, 2, 4, 5, 10, 20, 607, 1214, 1657, 2428, 3035, 3314, 6070, 6628, 8285, 12140, 16570, 33140, 1005799, 2011598, 4023196, 5028995, 10057990, 20115980]

約数ペア:

[(1, 20115980), (2, 10057990), (4, 5028995), (5, 4023196), (10, 2011598), (20, 1005799), (607, 33140), (1214, 16570), (1657, 12140), (2428, 8285), (3035, 6628), (3314, 6070)]