20940812

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{4517}}^1$

素因数の和:4601

約数の個数: 24

約数和(自身を含む): 39216240

約数和(自身を除く): 18275428

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 244, 1159, 2318, 4517, 4636, 9034, 18068, 85823, 171646, 275537, 343292, 551074, 1102148, 5235203, 10470406, 20940812]

約数ペア:

[(1, 20940812), (2, 10470406), (4, 5235203), (19, 1102148), (38, 551074), (61, 343292), (76, 275537), (122, 171646), (244, 85823), (1159, 18068), (2318, 9034), (4517, 4636)]