21132587

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{587}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 25025280

約数和(自身を除く): 3892693

約数列:

[1, 7, 37, 139, 259, 587, 973, 4109, 5143, 21719, 36001, 81593, 152033, 571151, 3018941, 21132587]

約数ペア:

[(1, 21132587), (7, 3018941), (37, 571151), (139, 152033), (259, 81593), (587, 36001), (973, 21719), (4109, 5143)]