21305804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13217}}^1$

素因数の和:13265

約数の個数: 24

約数和(自身を含む): 41451648

約数和(自身を除く): 20145844

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13217, 26434, 52868, 171821, 343642, 409727, 687284, 819454, 1638908, 5326451, 10652902, 21305804]

約数ペア:

[(1, 21305804), (2, 10652902), (4, 5326451), (13, 1638908), (26, 819454), (31, 687284), (52, 409727), (62, 343642), (124, 171821), (403, 52868), (806, 26434), (1612, 13217)]