18005980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{14759}}^1$

素因数の和:14829

約数の個数: 24

約数和(自身を含む): 38435040

約数和(自身を除く): 20429060

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 14759, 29518, 59036, 73795, 147590, 295180, 900299, 1800598, 3601196, 4501495, 9002990, 18005980]

約数ペア:

[(1, 18005980), (2, 9002990), (4, 4501495), (5, 3601196), (10, 1800598), (20, 900299), (61, 295180), (122, 147590), (244, 73795), (305, 59036), (610, 29518), (1220, 14759)]