21341978

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{80233}}^1$

素因数の和:80261

約数の個数: 16

約数和(自身を含む): 38512320

約数和(自身を除く): 17170342

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 80233, 160466, 561631, 1123262, 1524427, 3048854, 10670989, 21341978]

約数ペア:

[(1, 21341978), (2, 10670989), (7, 3048854), (14, 1524427), (19, 1123262), (38, 561631), (133, 160466), (266, 80233)]