17720677

素因数分解:

${\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:420

約数の個数: 16

約数和(自身を含む): 19692288

約数和(自身を除く): 1971611

約数列:

[1, 13, 71, 73, 263, 923, 949, 3419, 5183, 18673, 19199, 67379, 242749, 249587, 1363129, 17720677]

約数ペア:

[(1, 17720677), (13, 1363129), (71, 249587), (73, 242749), (263, 67379), (923, 19199), (949, 18673), (3419, 5183)]