31787379

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{20899}}^1$

素因数の和:20931

約数の個数: 18

約数和(自身を含む): 49721100

約数和(自身を除く): 17933721

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 20899, 62697, 188091, 271687, 815061, 2445183, 3531931, 10595793, 31787379]

約数ペア:

[(1, 31787379), (3, 10595793), (9, 3531931), (13, 2445183), (39, 815061), (117, 271687), (169, 188091), (507, 62697), (1521, 20899)]