21689512

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{208553}}^1$

素因数の和:208572

約数の個数: 16

約数和(自身を含む): 43796340

約数和(自身を除く): 22106828

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 208553, 417106, 834212, 1668424, 2711189, 5422378, 10844756, 21689512]

約数ペア:

[(1, 21689512), (2, 10844756), (4, 5422378), (8, 2711189), (13, 1668424), (26, 834212), (52, 417106), (104, 208553)]