20488240

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5449}}^1$

素因数の和:5509

約数の個数: 40

約数和(自身を含む): 48657600

約数和(自身を除く): 28169360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5449, 10898, 21796, 27245, 43592, 54490, 87184, 108980, 217960, 256103, 435920, 512206, 1024412, 1280515, 2048824, 2561030, 4097648, 5122060, 10244120, 20488240]

約数ペア:

[(1, 20488240), (2, 10244120), (4, 5122060), (5, 4097648), (8, 2561030), (10, 2048824), (16, 1280515), (20, 1024412), (40, 512206), (47, 435920), (80, 256103), (94, 217960), (188, 108980), (235, 87184), (376, 54490), (470, 43592), (752, 27245), (940, 21796), (1880, 10898), (3760, 5449)]