20177396840

素因数分解:

$2^3\times 5^1\times {\mathrm{504434921}}^1$

素因数の和:504434932

約数の個数: 16

約数和(自身を含む): 45399142980

約数和(自身を除く): 25221746140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 504434921, 1008869842, 2017739684, 2522174605, 4035479368, 5044349210, 10088698420, 20177396840]

約数ペア:

[(1, 20177396840), (2, 10088698420), (4, 5044349210), (5, 4035479368), (8, 2522174605), (10, 2017739684), (20, 1008869842), (40, 504434921)]