21512699

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:454

約数の個数: 16

約数和(自身を含む): 23925888

約数和(自身を除く): 2413189

約数列:

[1, 13, 47, 137, 257, 611, 1781, 3341, 6439, 12079, 35209, 83707, 157027, 457717, 1654823, 21512699]

約数ペア:

[(1, 21512699), (13, 1654823), (47, 457717), (137, 157027), (257, 83707), (611, 35209), (1781, 12079), (3341, 6439)]