19729409

素因数分解:

$7^2\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 23934528

約数和(自身を除く): 4205119

約数列:

[1, 7, 49, 53, 71, 107, 371, 497, 749, 2597, 3479, 3763, 5243, 5671, 7597, 26341, 39697, 53179, 184387, 277879, 372253, 402641, 2818487, 19729409]

約数ペア:

[(1, 19729409), (7, 2818487), (49, 402641), (53, 372253), (71, 277879), (107, 184387), (371, 53179), (497, 39697), (749, 26341), (2597, 7597), (3479, 5671), (3763, 5243)]