20818019

素因数分解:

${\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{109}}^1$

素因数の和:302

約数の個数: 16

約数和(自身を含む): 22260480

約数和(自身を除く): 1442461

約数列:

[1, 31, 61, 101, 109, 1891, 3131, 3379, 6161, 6649, 11009, 190991, 206119, 341279, 671549, 20818019]

約数ペア:

[(1, 20818019), (31, 671549), (61, 341279), (101, 206119), (109, 190991), (1891, 11009), (3131, 6649), (3379, 6161)]