21315186

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{27539}}^1$

素因数の和:27590

約数の個数: 24

約数和(自身を含む): 47258640

約数和(自身を除く): 25943454

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 27539, 55078, 82617, 165234, 247851, 495702, 1184177, 2368354, 3552531, 7105062, 10657593, 21315186]

約数ペア:

[(1, 21315186), (2, 10657593), (3, 7105062), (6, 3552531), (9, 2368354), (18, 1184177), (43, 495702), (86, 247851), (129, 165234), (258, 82617), (387, 55078), (774, 27539)]