21931690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199379}}^1$

素因数の和:199397

約数の個数: 16

約数和(自身を含む): 43066080

約数和(自身を除く): 21134390

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 199379, 398758, 996895, 1993790, 2193169, 4386338, 10965845, 21931690]

約数ペア:

[(1, 21931690), (2, 10965845), (5, 4386338), (10, 2193169), (11, 1993790), (22, 996895), (55, 398758), (110, 199379)]