21625640

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11503}}^1$

素因数の和:11561

約数の個数: 32

約数和(自身を含む): 49697280

約数和(自身を除く): 28071640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11503, 23006, 46012, 57515, 92024, 115030, 230060, 460120, 540641, 1081282, 2162564, 2703205, 4325128, 5406410, 10812820, 21625640]

約数ペア:

[(1, 21625640), (2, 10812820), (4, 5406410), (5, 4325128), (8, 2703205), (10, 2162564), (20, 1081282), (40, 540641), (47, 460120), (94, 230060), (188, 115030), (235, 92024), (376, 57515), (470, 46012), (940, 23006), (1880, 11503)]