21232720

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5647}}^1$

素因数の和:5707

約数の個数: 40

約数和(自身を含む): 50425344

約数和(自身を除く): 29192624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5647, 11294, 22588, 28235, 45176, 56470, 90352, 112940, 225880, 265409, 451760, 530818, 1061636, 1327045, 2123272, 2654090, 4246544, 5308180, 10616360, 21232720]

約数ペア:

[(1, 21232720), (2, 10616360), (4, 5308180), (5, 4246544), (8, 2654090), (10, 2123272), (16, 1327045), (20, 1061636), (40, 530818), (47, 451760), (80, 265409), (94, 225880), (188, 112940), (235, 90352), (376, 56470), (470, 45176), (752, 28235), (940, 22588), (1880, 11294), (3760, 5647)]