21939909

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{877}}^1$

素因数の和:1180

約数の個数: 16

約数和(自身を含む): 30343680

約数和(自身を除く): 8403771

約数列:

[1, 3, 31, 93, 269, 807, 877, 2631, 8339, 25017, 27187, 81561, 235913, 707739, 7313303, 21939909]

約数ペア:

[(1, 21939909), (3, 7313303), (31, 707739), (93, 235913), (269, 81561), (807, 27187), (877, 25017), (2631, 8339)]