18923639

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{541}}^1$

素因数の和:830

約数の個数: 16

約数和(自身を含む): 22894080

約数和(自身を除く): 3970441

約数列:

[1, 7, 19, 133, 263, 541, 1841, 3787, 4997, 10279, 34979, 71953, 142283, 995981, 2703377, 18923639]

約数ペア:

[(1, 18923639), (7, 2703377), (19, 995981), (133, 142283), (263, 71953), (541, 34979), (1841, 10279), (3787, 4997)]