21612903

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{907}}^1$

素因数の和:983

約数の個数: 24

約数和(自身を含む): 31903488

約数和(自身を除く): 10290585

約数列:

[1, 3, 13, 39, 47, 141, 169, 507, 611, 907, 1833, 2721, 7943, 11791, 23829, 35373, 42629, 127887, 153283, 459849, 554177, 1662531, 7204301, 21612903]

約数ペア:

[(1, 21612903), (3, 7204301), (13, 1662531), (39, 554177), (47, 459849), (141, 153283), (169, 127887), (507, 42629), (611, 35373), (907, 23829), (1833, 11791), (2721, 7943)]