21898617

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{307}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 11217543

約数列:

[1, 3, 13, 31, 39, 59, 93, 177, 307, 403, 767, 921, 1209, 1829, 2301, 3991, 5487, 9517, 11973, 18113, 23777, 28551, 54339, 71331, 123721, 235469, 371163, 561503, 706407, 1684509, 7299539, 21898617]

約数ペア:

[(1, 21898617), (3, 7299539), (13, 1684509), (31, 706407), (39, 561503), (59, 371163), (93, 235469), (177, 123721), (307, 71331), (403, 54339), (767, 28551), (921, 23777), (1209, 18113), (1829, 11973), (2301, 9517), (3991, 5487)]