20649568

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{15739}}^1$

素因数の和:15790

約数の個数: 24

約数和(自身を含む): 41648040

約数和(自身を除く): 20998472

約数列:

[1, 2, 4, 8, 16, 32, 41, 82, 164, 328, 656, 1312, 15739, 31478, 62956, 125912, 251824, 503648, 645299, 1290598, 2581196, 5162392, 10324784, 20649568]

約数ペア:

[(1, 20649568), (2, 10324784), (4, 5162392), (8, 2581196), (16, 1290598), (32, 645299), (41, 503648), (82, 251824), (164, 125912), (328, 62956), (656, 31478), (1312, 15739)]