12800390

素因数分解:

$2^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{7853}}^1$

素因数の和:8023

約数の個数: 16

約数和(自身を含む): 23185008

約数和(自身を除く): 10384618

約数列:

[1, 2, 5, 10, 163, 326, 815, 1630, 7853, 15706, 39265, 78530, 1280039, 2560078, 6400195, 12800390]

約数ペア:

[(1, 12800390), (2, 6400195), (5, 2560078), (10, 1280039), (163, 78530), (326, 39265), (815, 15706), (1630, 7853)]