439400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^3$

素因数の和:55

約数の個数: 48

約数和(自身を含む): 1106700

約数和(自身を除く): 667300

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 169, 200, 260, 325, 338, 520, 650, 676, 845, 1300, 1352, 1690, 2197, 2600, 3380, 4225, 4394, 6760, 8450, 8788, 10985, 16900, 17576, 21970, 33800, 43940, 54925, 87880, 109850, 219700, 439400]

約数ペア:

[(1, 439400), (2, 219700), (4, 109850), (5, 87880), (8, 54925), (10, 43940), (13, 33800), (20, 21970), (25, 17576), (26, 16900), (40, 10985), (50, 8788), (52, 8450), (65, 6760), (100, 4394), (104, 4225), (130, 3380), (169, 2600), (200, 2197), (260, 1690), (325, 1352), (338, 1300), (520, 845), (650, 676)]