291212020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1323691}}^1$

素因数の和:1323711

約数の個数: 24

約数和(自身を含む): 667140768

約数和(自身を除く): 375928748

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1323691, 2647382, 5294764, 6618455, 13236910, 14560601, 26473820, 29121202, 58242404, 72803005, 145606010, 291212020]

約数ペア:

[(1, 291212020), (2, 145606010), (4, 72803005), (5, 58242404), (10, 29121202), (11, 26473820), (20, 14560601), (22, 13236910), (44, 6618455), (55, 5294764), (110, 2647382), (220, 1323691)]