218438840

素因数分解:

$2^3\times 5^1\times {\mathrm{5460971}}^1$

素因数の和:5460982

約数の個数: 16

約数和(自身を含む): 491487480

約数和(自身を除く): 273048640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5460971, 10921942, 21843884, 27304855, 43687768, 54609710, 109219420, 218438840]

約数ペア:

[(1, 218438840), (2, 109219420), (4, 54609710), (5, 43687768), (8, 27304855), (10, 21843884), (20, 10921942), (40, 5460971)]