21975940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{156971}}^1$

素因数の和:156987

約数の個数: 24

約数和(自身を含む): 52742592

約数和(自身を除く): 30766652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 156971, 313942, 627884, 784855, 1098797, 1569710, 2197594, 3139420, 4395188, 5493985, 10987970, 21975940]

約数ペア:

[(1, 21975940), (2, 10987970), (4, 5493985), (5, 4395188), (7, 3139420), (10, 2197594), (14, 1569710), (20, 1098797), (28, 784855), (35, 627884), (70, 313942), (140, 156971)]