21216026

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{3251}}^1$

素因数の和:3517

約数の個数: 16

約数和(自身を含む): 34419168

約数和(自身を除く): 13203142

約数列:

[1, 2, 13, 26, 251, 502, 3251, 3263, 6502, 6526, 42263, 84526, 816001, 1632002, 10608013, 21216026]

約数ペア:

[(1, 21216026), (2, 10608013), (13, 1632002), (26, 816001), (251, 84526), (502, 42263), (3251, 6526), (3263, 6502)]