20551209

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{23869}}^1$

素因数の和:23920

約数の個数: 16

約数和(自身を含む): 32081280

約数和(自身を除く): 11530071

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 23869, 71607, 167083, 501249, 978629, 2935887, 6850403, 20551209]

約数ペア:

[(1, 20551209), (3, 6850403), (7, 2935887), (21, 978629), (41, 501249), (123, 167083), (287, 71607), (861, 23869)]