21278798

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{9341}}^1$

素因数の和:9427

約数の個数: 16

約数和(自身を含む): 34303824

約数和(自身を除く): 13025026

約数列:

[1, 2, 17, 34, 67, 134, 1139, 2278, 9341, 18682, 158797, 317594, 625847, 1251694, 10639399, 21278798]

約数ペア:

[(1, 21278798), (2, 10639399), (17, 1251694), (34, 625847), (67, 317594), (134, 158797), (1139, 18682), (2278, 9341)]