18798680

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4159}}^1$

素因数の和:4283

約数の個数: 32

約数和(自身を含む): 42681600

約数和(自身を除く): 23882920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4159, 4520, 8318, 16636, 20795, 33272, 41590, 83180, 166360, 469967, 939934, 1879868, 2349835, 3759736, 4699670, 9399340, 18798680]

約数ペア:

[(1, 18798680), (2, 9399340), (4, 4699670), (5, 3759736), (8, 2349835), (10, 1879868), (20, 939934), (40, 469967), (113, 166360), (226, 83180), (452, 41590), (565, 33272), (904, 20795), (1130, 16636), (2260, 8318), (4159, 4520)]