18836920

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6451}}^1$

素因数の和:6535

約数の個数: 32

約数和(自身を含む): 42970320

約数和(自身を除く): 24133400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6451, 12902, 25804, 32255, 51608, 64510, 129020, 258040, 470923, 941846, 1883692, 2354615, 3767384, 4709230, 9418460, 18836920]

約数ペア:

[(1, 18836920), (2, 9418460), (4, 4709230), (5, 3767384), (8, 2354615), (10, 1883692), (20, 941846), (40, 470923), (73, 258040), (146, 129020), (292, 64510), (365, 51608), (584, 32255), (730, 25804), (1460, 12902), (2920, 6451)]