20187999

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1583}}^1$

素因数の和:1711

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 11523681

約数列:

[1, 3, 9, 13, 39, 109, 117, 327, 981, 1417, 1583, 4251, 4749, 12753, 14247, 20579, 61737, 172547, 185211, 517641, 1552923, 2243111, 6729333, 20187999]

約数ペア:

[(1, 20187999), (3, 6729333), (9, 2243111), (13, 1552923), (39, 517641), (109, 185211), (117, 172547), (327, 61737), (981, 20579), (1417, 14247), (1583, 12753), (4251, 4749)]