21556714

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{9463}}^1$

素因数の和:9549

約数の個数: 16

約数和(自身を含む): 34751808

約数和(自身を除く): 13195094

約数列:

[1, 2, 17, 34, 67, 134, 1139, 2278, 9463, 18926, 160871, 321742, 634021, 1268042, 10778357, 21556714]

約数ペア:

[(1, 21556714), (2, 10778357), (17, 1268042), (34, 634021), (67, 321742), (134, 160871), (1139, 18926), (2278, 9463)]