20918673

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{113}}^1\times {\mathrm{307}}^1$

素因数の和:493

約数の個数: 24

約数和(自身を含む): 31039008

約数和(自身を除く): 10120335

約数列:

[1, 3, 9, 67, 113, 201, 307, 339, 603, 921, 1017, 2763, 7571, 20569, 22713, 34691, 61707, 68139, 104073, 185121, 312219, 2324297, 6972891, 20918673]

約数ペア:

[(1, 20918673), (3, 6972891), (9, 2324297), (67, 312219), (113, 185121), (201, 104073), (307, 68139), (339, 61707), (603, 34691), (921, 22713), (1017, 20569), (2763, 7571)]