20828538

素因数分解:

$2^1\times 3^2\times {\mathrm{521}}^1\times {\mathrm{2221}}^1$

素因数の和:2750

約数の個数: 24

約数和(自身を含む): 45235476

約数和(自身を除く): 24406938

約数列:

[1, 2, 3, 6, 9, 18, 521, 1042, 1563, 2221, 3126, 4442, 4689, 6663, 9378, 13326, 19989, 39978, 1157141, 2314282, 3471423, 6942846, 10414269, 20828538]

約数ペア:

[(1, 20828538), (2, 10414269), (3, 6942846), (6, 3471423), (9, 2314282), (18, 1157141), (521, 39978), (1042, 19989), (1563, 13326), (2221, 9378), (3126, 6663), (4442, 4689)]