8128900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^3\times {\mathrm{37}}^1$

素因数の和:90

約数の個数: 72

約数和(自身を含む): 19625480

約数和(自身を除く): 11496580

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 37, 50, 52, 65, 74, 100, 130, 148, 169, 185, 260, 325, 338, 370, 481, 650, 676, 740, 845, 925, 962, 1300, 1690, 1850, 1924, 2197, 2405, 3380, 3700, 4225, 4394, 4810, 6253, 8450, 8788, 9620, 10985, 12025, 12506, 16900, 21970, 24050, 25012, 31265, 43940, 48100, 54925, 62530, 81289, 109850, 125060, 156325, 162578, 219700, 312650, 325156, 406445, 625300, 812890, 1625780, 2032225, 4064450, 8128900]

約数ペア:

[(1, 8128900), (2, 4064450), (4, 2032225), (5, 1625780), (10, 812890), (13, 625300), (20, 406445), (25, 325156), (26, 312650), (37, 219700), (50, 162578), (52, 156325), (65, 125060), (74, 109850), (100, 81289), (130, 62530), (148, 54925), (169, 48100), (185, 43940), (260, 31265), (325, 25012), (338, 24050), (370, 21970), (481, 16900), (650, 12506), (676, 12025), (740, 10985), (845, 9620), (925, 8788), (962, 8450), (1300, 6253), (1690, 4810), (1850, 4394), (1924, 4225), (2197, 3700), (2405, 3380)]