21500270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{195457}}^1$

素因数の和:195475

約数の個数: 16

約数和(自身を含む): 42218928

約数和(自身を除く): 20718658

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 195457, 390914, 977285, 1954570, 2150027, 4300054, 10750135, 21500270]

約数ペア:

[(1, 21500270), (2, 10750135), (5, 4300054), (10, 2150027), (11, 1954570), (22, 977285), (55, 390914), (110, 195457)]