21990176

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{52861}}^1$

素因数の和:52884

約数の個数: 24

約数和(自身を含む): 46624284

約数和(自身を除く): 24634108

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 52861, 105722, 211444, 422888, 687193, 845776, 1374386, 1691552, 2748772, 5497544, 10995088, 21990176]

約数ペア:

[(1, 21990176), (2, 10995088), (4, 5497544), (8, 2748772), (13, 1691552), (16, 1374386), (26, 845776), (32, 687193), (52, 422888), (104, 211444), (208, 105722), (416, 52861)]