266656

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{641}}^1$

素因数の和:664

約数の個数: 24

約数和(自身を含む): 566244

約数和(自身を除く): 299588

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 641, 1282, 2564, 5128, 8333, 10256, 16666, 20512, 33332, 66664, 133328, 266656]

約数ペア:

[(1, 266656), (2, 133328), (4, 66664), (8, 33332), (13, 20512), (16, 16666), (26, 10256), (32, 8333), (52, 5128), (104, 2564), (208, 1282), (416, 641)]