20745866

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{1619}}^1$

素因数の和:1813

約数の個数: 16

約数和(自身を含む): 32076000

約数和(自身を除く): 11330134

約数列:

[1, 2, 43, 86, 149, 298, 1619, 3238, 6407, 12814, 69617, 139234, 241231, 482462, 10372933, 20745866]

約数ペア:

[(1, 20745866), (2, 10372933), (43, 482462), (86, 241231), (149, 139234), (298, 69617), (1619, 12814), (3238, 6407)]