19886425

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1423}}^1$

素因数の和:1489

約数の個数: 24

約数和(自身を含む): 27192704

約数和(自身を除く): 7306279

約数列:

[1, 5, 13, 25, 43, 65, 215, 325, 559, 1075, 1423, 2795, 7115, 13975, 18499, 35575, 61189, 92495, 305945, 462475, 795457, 1529725, 3977285, 19886425]

約数ペア:

[(1, 19886425), (5, 3977285), (13, 1529725), (25, 795457), (43, 462475), (65, 305945), (215, 92495), (325, 61189), (559, 35575), (1075, 18499), (1423, 13975), (2795, 7115)]