20687793

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{167}}^1\times {\mathrm{347}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 33675264

約数和(自身を除く): 12987471

約数列:

[1, 3, 7, 17, 21, 51, 119, 167, 347, 357, 501, 1041, 1169, 2429, 2839, 3507, 5899, 7287, 8517, 17697, 19873, 41293, 57949, 59619, 123879, 173847, 405643, 985133, 1216929, 2955399, 6895931, 20687793]

約数ペア:

[(1, 20687793), (3, 6895931), (7, 2955399), (17, 1216929), (21, 985133), (51, 405643), (119, 173847), (167, 123879), (347, 59619), (357, 57949), (501, 41293), (1041, 19873), (1169, 17697), (2429, 8517), (2839, 7287), (3507, 5899)]