20970089

素因数分解:

$7^2\times {\mathrm{23}}^2\times {\mathrm{809}}^1$

素因数の和:869

約数の個数: 18

約数和(自身を含む): 25532010

約数和(自身を除く): 4561921

約数列:

[1, 7, 23, 49, 161, 529, 809, 1127, 3703, 5663, 18607, 25921, 39641, 130249, 427961, 911743, 2995727, 20970089]

約数ペア:

[(1, 20970089), (7, 2995727), (23, 911743), (49, 427961), (161, 130249), (529, 39641), (809, 25921), (1127, 18607), (3703, 5663)]