20778199

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{149}}^1\times {\mathrm{631}}^1$

素因数の和:810

約数の個数: 16

約数和(自身を含む): 23889600

約数和(自身を除く): 3111401

約数列:

[1, 13, 17, 149, 221, 631, 1937, 2533, 8203, 10727, 32929, 94019, 139451, 1222247, 1598323, 20778199]

約数ペア:

[(1, 20778199), (13, 1598323), (17, 1222247), (149, 139451), (221, 94019), (631, 32929), (1937, 10727), (2533, 8203)]