21887656

素因数分解:

$2^3\times 7^1\times {\mathrm{390851}}^1$

素因数の和:390864

約数の個数: 16

約数和(自身を含む): 46902240

約数和(自身を除く): 25014584

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 390851, 781702, 1563404, 2735957, 3126808, 5471914, 10943828, 21887656]

約数ペア:

[(1, 21887656), (2, 10943828), (4, 5471914), (7, 3126808), (8, 2735957), (14, 1563404), (28, 781702), (56, 390851)]