21911097

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 32

約数和(自身を含む): 32852736

約数和(自身を除く): 10941639

約数列:

[1, 3, 13, 39, 41, 71, 123, 193, 213, 533, 579, 923, 1599, 2509, 2769, 2911, 7527, 7913, 8733, 13703, 23739, 37843, 41109, 102869, 113529, 178139, 308607, 534417, 561823, 1685469, 7303699, 21911097]

約数ペア:

[(1, 21911097), (3, 7303699), (13, 1685469), (39, 561823), (41, 534417), (71, 308607), (123, 178139), (193, 113529), (213, 102869), (533, 41109), (579, 37843), (923, 23739), (1599, 13703), (2509, 8733), (2769, 7913), (2911, 7527)]