21780714

素因数分解:

$2^1\times 3^1\times {\mathrm{197}}^1\times {\mathrm{18427}}^1$

素因数の和:18629

約数の個数: 16

約数和(自身を含む): 43784928

約数和(自身を除く): 22004214

約数列:

[1, 2, 3, 6, 197, 394, 591, 1182, 18427, 36854, 55281, 110562, 3630119, 7260238, 10890357, 21780714]

約数ペア:

[(1, 21780714), (2, 10890357), (3, 7260238), (6, 3630119), (197, 110562), (394, 55281), (591, 36854), (1182, 18427)]