20551251

素因数分解:

$3^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{6481}}^1$

素因数の和:6642

約数の個数: 16

約数和(自身を含む): 31528448

約数和(自身を除く): 10977197

約数列:

[1, 3, 7, 21, 151, 453, 1057, 3171, 6481, 19443, 45367, 136101, 978631, 2935893, 6850417, 20551251]

約数ペア:

[(1, 20551251), (3, 6850417), (7, 2935893), (21, 978631), (151, 136101), (453, 45367), (1057, 19443), (3171, 6481)]