21911791

素因数分解:

${\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{461}}^1$

素因数の和:650

約数の個数: 16

約数和(自身を含む): 24948000

約数和(自身を除く): 3036209

約数列:

[1, 11, 29, 149, 319, 461, 1639, 4321, 5071, 13369, 47531, 68689, 147059, 755579, 1991981, 21911791]

約数ペア:

[(1, 21911791), (11, 1991981), (29, 755579), (149, 147059), (319, 68689), (461, 47531), (1639, 13369), (4321, 5071)]