21858770

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1811}}^1$

素因数の和:1906

約数の個数: 32

約数和(自身を含む): 42270336

約数和(自身を除く): 20411566

約数列:

[1, 2, 5, 10, 17, 34, 71, 85, 142, 170, 355, 710, 1207, 1811, 2414, 3622, 6035, 9055, 12070, 18110, 30787, 61574, 128581, 153935, 257162, 307870, 642905, 1285810, 2185877, 4371754, 10929385, 21858770]

約数ペア:

[(1, 21858770), (2, 10929385), (5, 4371754), (10, 2185877), (17, 1285810), (34, 642905), (71, 307870), (85, 257162), (142, 153935), (170, 128581), (355, 61574), (710, 30787), (1207, 18110), (1811, 12070), (2414, 9055), (3622, 6035)]