18356920

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4289}}^1$

素因数の和:4407

約数の個数: 32

約数和(自身を含む): 41698800

約数和(自身を除く): 23341880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 4289, 8578, 17156, 21445, 34312, 42890, 85780, 171560, 458923, 917846, 1835692, 2294615, 3671384, 4589230, 9178460, 18356920]

約数ペア:

[(1, 18356920), (2, 9178460), (4, 4589230), (5, 3671384), (8, 2294615), (10, 1835692), (20, 917846), (40, 458923), (107, 171560), (214, 85780), (428, 42890), (535, 34312), (856, 21445), (1070, 17156), (2140, 8578), (4280, 4289)]