21086235

素因数分解:

$3^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{757}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 36656880

約数和(自身を除く): 15570645

約数列:

[1, 3, 5, 9, 15, 45, 619, 757, 1857, 2271, 3095, 3785, 5571, 6813, 9285, 11355, 27855, 34065, 468583, 1405749, 2342915, 4217247, 7028745, 21086235]

約数ペア:

[(1, 21086235), (3, 7028745), (5, 4217247), (9, 2342915), (15, 1405749), (45, 468583), (619, 34065), (757, 27855), (1857, 11355), (2271, 9285), (3095, 6813), (3785, 5571)]