20643994

素因数分解:

$2^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{11087}}^1$

素因数の和:11122

約数の個数: 24

約数和(自身を含む): 37920960

約数和(自身を除く): 17276966

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 266, 931, 1862, 11087, 22174, 77609, 155218, 210653, 421306, 543263, 1086526, 1474571, 2949142, 10321997, 20643994]

約数ペア:

[(1, 20643994), (2, 10321997), (7, 2949142), (14, 1474571), (19, 1086526), (38, 543263), (49, 421306), (98, 210653), (133, 155218), (266, 77609), (931, 22174), (1862, 11087)]