20329420

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{1951}}^1$

素因数の和:2481

約数の個数: 24

約数和(自身を含む): 42795648

約数和(自身を除く): 22466228

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 1951, 2084, 2605, 3902, 5210, 7804, 9755, 10420, 19510, 39020, 1016471, 2032942, 4065884, 5082355, 10164710, 20329420]

約数ペア:

[(1, 20329420), (2, 10164710), (4, 5082355), (5, 4065884), (10, 2032942), (20, 1016471), (521, 39020), (1042, 19510), (1951, 10420), (2084, 9755), (2605, 7804), (3902, 5210)]