21490677

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6803}}^1$

素因数の和:6831

約数の個数: 24

約数和(自身を含む): 34673184

約数和(自身を除く): 13182507

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6803, 20409, 61227, 88439, 183681, 265317, 551043, 795951, 1653129, 2387853, 7163559, 21490677]

約数ペア:

[(1, 21490677), (3, 7163559), (9, 2387853), (13, 1653129), (27, 795951), (39, 551043), (81, 265317), (117, 183681), (243, 88439), (351, 61227), (1053, 20409), (3159, 6803)]