21172811

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{1579}}^1$

素因数の和:1666

約数の個数: 16

約数和(自身を含む): 24572160

約数和(自身を除く): 3399349

約数列:

[1, 11, 23, 53, 253, 583, 1219, 1579, 13409, 17369, 36317, 83687, 399487, 920557, 1924801, 21172811]

約数ペア:

[(1, 21172811), (11, 1924801), (23, 920557), (53, 399487), (253, 83687), (583, 36317), (1219, 17369), (1579, 13409)]