20721196

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{2447}}^1$

素因数の和:2553

約数の個数: 24

約数和(自身を含む): 38041920

約数和(自身を除く): 17320724

約数列:

[1, 2, 4, 29, 58, 73, 116, 146, 292, 2117, 2447, 4234, 4894, 8468, 9788, 70963, 141926, 178631, 283852, 357262, 714524, 5180299, 10360598, 20721196]

約数ペア:

[(1, 20721196), (2, 10360598), (4, 5180299), (29, 714524), (58, 357262), (73, 283852), (116, 178631), (146, 141926), (292, 70963), (2117, 9788), (2447, 8468), (4234, 4894)]