905020120

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{43261}}^1$

素因数の和:43795

約数の個数: 32

約数和(自身を含む): 2040235920

約数和(自身を除く): 1135215800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 1046, 2092, 2615, 4184, 5230, 10460, 20920, 43261, 86522, 173044, 216305, 346088, 432610, 865220, 1730440, 22625503, 45251006, 90502012, 113127515, 181004024, 226255030, 452510060, 905020120]

約数ペア:

[(1, 905020120), (2, 452510060), (4, 226255030), (5, 181004024), (8, 113127515), (10, 90502012), (20, 45251006), (40, 22625503), (523, 1730440), (1046, 865220), (2092, 432610), (2615, 346088), (4184, 216305), (5230, 173044), (10460, 86522), (20920, 43261)]