18444520

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1009}}^1$

素因数の和:1477

約数の個数: 32

約数和(自身を含む): 41632200

約数和(自身を除く): 23187680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1009, 1828, 2018, 2285, 3656, 4036, 4570, 5045, 8072, 9140, 10090, 18280, 20180, 40360, 461113, 922226, 1844452, 2305565, 3688904, 4611130, 9222260, 18444520]

約数ペア:

[(1, 18444520), (2, 9222260), (4, 4611130), (5, 3688904), (8, 2305565), (10, 1844452), (20, 922226), (40, 461113), (457, 40360), (914, 20180), (1009, 18280), (1828, 10090), (2018, 9140), (2285, 8072), (3656, 5045), (4036, 4570)]