208691428

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{21269}}^1$

素因数の和:21507

約数の個数: 24

約数和(自身を含む): 400216320

約数和(自身を除く): 191524892

約数列:

[1, 2, 4, 11, 22, 44, 223, 446, 892, 2453, 4906, 9812, 21269, 42538, 85076, 233959, 467918, 935836, 4742987, 9485974, 18971948, 52172857, 104345714, 208691428]

約数ペア:

[(1, 208691428), (2, 104345714), (4, 52172857), (11, 18971948), (22, 9485974), (44, 4742987), (223, 935836), (446, 467918), (892, 233959), (2453, 85076), (4906, 42538), (9812, 21269)]