19984811

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{563}}^1$

素因数の和:1042

約数の個数: 16

約数和(自身を含む): 25014528

約数和(自身を除く): 5029717

約数列:

[1, 7, 11, 77, 461, 563, 3227, 3941, 5071, 6193, 35497, 43351, 259543, 1816801, 2854973, 19984811]

約数ペア:

[(1, 19984811), (7, 2854973), (11, 1816801), (77, 259543), (461, 43351), (563, 35497), (3227, 6193), (3941, 5071)]