18804440

素因数分解:

$2^3\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1483}}^1$

素因数の和:1811

約数の個数: 32

約数和(自身を含む): 42472080

約数和(自身を除く): 23667640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 317, 634, 1268, 1483, 1585, 2536, 2966, 3170, 5932, 6340, 7415, 11864, 12680, 14830, 29660, 59320, 470111, 940222, 1880444, 2350555, 3760888, 4701110, 9402220, 18804440]

約数ペア:

[(1, 18804440), (2, 9402220), (4, 4701110), (5, 3760888), (8, 2350555), (10, 1880444), (20, 940222), (40, 470111), (317, 59320), (634, 29660), (1268, 14830), (1483, 12680), (1585, 11864), (2536, 7415), (2966, 6340), (3170, 5932)]