21076276

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{4013}}^1$

素因数の和:4131

約数の個数: 24

約数和(自身を含む): 40123944

約数和(自身を除く): 19047668

約数列:

[1, 2, 4, 13, 26, 52, 101, 202, 404, 1313, 2626, 4013, 5252, 8026, 16052, 52169, 104338, 208676, 405313, 810626, 1621252, 5269069, 10538138, 21076276]

約数ペア:

[(1, 21076276), (2, 10538138), (4, 5269069), (13, 1621252), (26, 810626), (52, 405313), (101, 208676), (202, 104338), (404, 52169), (1313, 16052), (2626, 8026), (4013, 5252)]