21706529

素因数分解:

${\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1$

素因数の和:201

約数の個数: 24

約数和(自身を含む): 25122240

約数和(自身を除く): 3415711

約数列:

[1, 13, 29, 43, 103, 169, 377, 559, 1247, 1339, 2987, 4429, 4901, 7267, 16211, 17407, 38831, 57577, 128441, 210743, 504803, 748501, 1669733, 21706529]

約数ペア:

[(1, 21706529), (13, 1669733), (29, 748501), (43, 504803), (103, 210743), (169, 128441), (377, 57577), (559, 38831), (1247, 17407), (1339, 16211), (2987, 7267), (4429, 4901)]