40638544

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{61949}}^1$

素因数の和:61998

約数の個数: 20

約数和(自身を含む): 80658900

約数和(自身を除く): 40020356

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 61949, 123898, 247796, 495592, 991184, 2539909, 5079818, 10159636, 20319272, 40638544]

約数ペア:

[(1, 40638544), (2, 20319272), (4, 10159636), (8, 5079818), (16, 2539909), (41, 991184), (82, 495592), (164, 247796), (328, 123898), (656, 61949)]