21238238

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79843}}^1$

素因数の和:79871

約数の個数: 16

約数和(自身を含む): 38325120

約数和(自身を除く): 17086882

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 79843, 159686, 558901, 1117802, 1517017, 3034034, 10619119, 21238238]

約数ペア:

[(1, 21238238), (2, 10619119), (7, 3034034), (14, 1517017), (19, 1117802), (38, 558901), (133, 159686), (266, 79843)]