21290217

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{4831}}^1$

素因数の和:4960

約数の個数: 16

約数和(自身を含む): 30847488

約数和(自身を除く): 9557271

約数列:

[1, 3, 13, 39, 113, 339, 1469, 4407, 4831, 14493, 62803, 188409, 545903, 1637709, 7096739, 21290217]

約数ペア:

[(1, 21290217), (3, 7096739), (13, 1637709), (39, 545903), (113, 188409), (339, 62803), (1469, 14493), (4407, 4831)]