21259466

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{1531}}^1$

素因数の和:1717

約数の個数: 16

約数和(自身を含む): 32760288

約数和(自身を除く): 11500822

約数列:

[1, 2, 53, 106, 131, 262, 1531, 3062, 6943, 13886, 81143, 162286, 200561, 401122, 10629733, 21259466]

約数ペア:

[(1, 21259466), (2, 10629733), (53, 401122), (106, 200561), (131, 162286), (262, 81143), (1531, 13886), (3062, 6943)]