21931259

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{761}}^1$

素因数の和:970

約数の個数: 16

約数和(自身を含む): 26334720

約数和(自身を除く): 4403461

約数列:

[1, 7, 23, 161, 179, 761, 1253, 4117, 5327, 17503, 28819, 122521, 136219, 953533, 3133037, 21931259]

約数ペア:

[(1, 21931259), (7, 3133037), (23, 953533), (161, 136219), (179, 122521), (761, 28819), (1253, 17503), (4117, 5327)]