217224721

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{163}}^1\times {\mathrm{3121}}^1$

素因数の和:3352

約数の個数: 16

約数和(自身を含む): 253955968

約数和(自身を除く): 36731247

約数列:

[1, 7, 61, 163, 427, 1141, 3121, 9943, 21847, 69601, 190381, 508723, 1332667, 3561061, 31032103, 217224721]

約数ペア:

[(1, 217224721), (7, 31032103), (61, 3561061), (163, 1332667), (427, 508723), (1141, 190381), (3121, 69601), (9943, 21847)]