18070960

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1999}}^1$

素因数の和:2125

約数の個数: 40

約数和(自身を含む): 42408000

約数和(自身を除く): 24337040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 1999, 2260, 3998, 4520, 7996, 9040, 9995, 15992, 19990, 31984, 39980, 79960, 159920, 225887, 451774, 903548, 1129435, 1807096, 2258870, 3614192, 4517740, 9035480, 18070960]

約数ペア:

[(1, 18070960), (2, 9035480), (4, 4517740), (5, 3614192), (8, 2258870), (10, 1807096), (16, 1129435), (20, 903548), (40, 451774), (80, 225887), (113, 159920), (226, 79960), (452, 39980), (565, 31984), (904, 19990), (1130, 15992), (1808, 9995), (1999, 9040), (2260, 7996), (3998, 4520)]