31019781

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:166

約数の個数: 48

約数和(自身を含む): 49014720

約数和(自身を除く): 17994939

約数列:

[1, 3, 13, 17, 39, 51, 59, 61, 169, 177, 183, 221, 507, 663, 767, 793, 1003, 1037, 2301, 2379, 2873, 3009, 3111, 3599, 8619, 9971, 10309, 10797, 13039, 13481, 29913, 30927, 39117, 40443, 46787, 61183, 140361, 169507, 175253, 183549, 508521, 525759, 608231, 795379, 1824693, 2386137, 10339927, 31019781]

約数ペア:

[(1, 31019781), (3, 10339927), (13, 2386137), (17, 1824693), (39, 795379), (51, 608231), (59, 525759), (61, 508521), (169, 183549), (177, 175253), (183, 169507), (221, 140361), (507, 61183), (663, 46787), (767, 40443), (793, 39117), (1003, 30927), (1037, 29913), (2301, 13481), (2379, 13039), (2873, 10797), (3009, 10309), (3111, 9971), (3599, 8619)]