28188460

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{16981}}^1$

素因数の和:17073

約数の個数: 24

約数和(自身を含む): 59912496

約数和(自身を除く): 31724036

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 16981, 33962, 67924, 84905, 169810, 339620, 1409423, 2818846, 5637692, 7047115, 14094230, 28188460]

約数ペア:

[(1, 28188460), (2, 14094230), (4, 7047115), (5, 5637692), (10, 2818846), (20, 1409423), (83, 339620), (166, 169810), (332, 84905), (415, 67924), (830, 33962), (1660, 16981)]