20977229

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{3779}}^1$

素因数の和:3860

約数の個数: 16

約数和(自身を含む): 26248320

約数和(自身を除く): 5271091

約数列:

[1, 7, 13, 61, 91, 427, 793, 3779, 5551, 26453, 49127, 230519, 343889, 1613633, 2996747, 20977229]

約数ペア:

[(1, 20977229), (7, 2996747), (13, 1613633), (61, 343889), (91, 230519), (427, 49127), (793, 26453), (3779, 5551)]