51231380

素因数分解:

$2^2\times 5^1\times {\mathrm{1399}}^1\times {\mathrm{1831}}^1$

素因数の和:3239

約数の個数: 24

約数和(自身を含む): 107721600

約数和(自身を除く): 56490220

約数列:

[1, 2, 4, 5, 10, 20, 1399, 1831, 2798, 3662, 5596, 6995, 7324, 9155, 13990, 18310, 27980, 36620, 2561569, 5123138, 10246276, 12807845, 25615690, 51231380]

約数ペア:

[(1, 51231380), (2, 25615690), (4, 12807845), (5, 10246276), (10, 5123138), (20, 2561569), (1399, 36620), (1831, 27980), (2798, 18310), (3662, 13990), (5596, 9155), (6995, 7324)]