20724207

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{8293}}^1$

素因数の和:8327

約数の個数: 24

約数和(自身を含む): 34038576

約数和(自身を除く): 13314369

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 8293, 24879, 58051, 140981, 174153, 406357, 422943, 986867, 1219071, 2960601, 6908069, 20724207]

約数ペア:

[(1, 20724207), (3, 6908069), (7, 2960601), (17, 1219071), (21, 986867), (49, 422943), (51, 406357), (119, 174153), (147, 140981), (357, 58051), (833, 24879), (2499, 8293)]