18837988

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{5407}}^1$

素因数の和:5491

約数の個数: 24

約数和(自身を含む): 36038912

約数和(自身を除く): 17200924

約数列:

[1, 2, 4, 13, 26, 52, 67, 134, 268, 871, 1742, 3484, 5407, 10814, 21628, 70291, 140582, 281164, 362269, 724538, 1449076, 4709497, 9418994, 18837988]

約数ペア:

[(1, 18837988), (2, 9418994), (4, 4709497), (13, 1449076), (26, 724538), (52, 362269), (67, 281164), (134, 140582), (268, 70291), (871, 21628), (1742, 10814), (3484, 5407)]