21221707

素因数分解:

${\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:534

約数の個数: 16

約数和(自身を含む): 23849280

約数和(自身を除く): 2627573

約数列:

[1, 13, 29, 181, 311, 377, 2353, 4043, 5249, 9019, 56291, 68237, 117247, 731783, 1632439, 21221707]

約数ペア:

[(1, 21221707), (13, 1632439), (29, 731783), (181, 117247), (311, 68237), (377, 56291), (2353, 9019), (4043, 5249)]