21729104

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{31583}}^1$

素因数の和:31634

約数の個数: 20

約数和(自身を含む): 43080576

約数和(自身を除く): 21351472

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 31583, 63166, 126332, 252664, 505328, 1358069, 2716138, 5432276, 10864552, 21729104]

約数ペア:

[(1, 21729104), (2, 10864552), (4, 5432276), (8, 2716138), (16, 1358069), (43, 505328), (86, 252664), (172, 126332), (344, 63166), (688, 31583)]