20465380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78713}}^1$

素因数の和:78735

約数の個数: 24

約数和(自身を含む): 46283832

約数和(自身を除く): 25818452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 78713, 157426, 314852, 393565, 787130, 1023269, 1574260, 2046538, 4093076, 5116345, 10232690, 20465380]

約数ペア:

[(1, 20465380), (2, 10232690), (4, 5116345), (5, 4093076), (10, 2046538), (13, 1574260), (20, 1023269), (26, 787130), (52, 393565), (65, 314852), (130, 157426), (260, 78713)]