21041251

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^2$

素因数の和:259

約数の個数: 24

約数和(自身を含む): 27627264

約数和(自身を除く): 6586013

約数列:

[1, 7, 11, 23, 77, 109, 161, 253, 763, 1199, 1771, 2507, 8393, 11881, 17549, 27577, 83167, 130691, 193039, 273263, 914837, 1912841, 3005893, 21041251]

約数ペア:

[(1, 21041251), (7, 3005893), (11, 1912841), (23, 914837), (77, 273263), (109, 193039), (161, 130691), (253, 83167), (763, 27577), (1199, 17549), (1771, 11881), (2507, 8393)]