128562520

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{10139}}^1$

素因数の和:10467

約数の個数: 32

約数和(自身を含む): 290206800

約数和(自身を除く): 161644280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1585, 2536, 3170, 6340, 10139, 12680, 20278, 40556, 50695, 81112, 101390, 202780, 405560, 3214063, 6428126, 12856252, 16070315, 25712504, 32140630, 64281260, 128562520]

約数ペア:

[(1, 128562520), (2, 64281260), (4, 32140630), (5, 25712504), (8, 16070315), (10, 12856252), (20, 6428126), (40, 3214063), (317, 405560), (634, 202780), (1268, 101390), (1585, 81112), (2536, 50695), (3170, 40556), (6340, 20278), (10139, 12680)]