21001480

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{11171}}^1$

素因数の和:11229

約数の個数: 32

約数和(自身を含む): 48263040

約数和(自身を除く): 27261560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 11171, 22342, 44684, 55855, 89368, 111710, 223420, 446840, 525037, 1050074, 2100148, 2625185, 4200296, 5250370, 10500740, 21001480]

約数ペア:

[(1, 21001480), (2, 10500740), (4, 5250370), (5, 4200296), (8, 2625185), (10, 2100148), (20, 1050074), (40, 525037), (47, 446840), (94, 223420), (188, 111710), (235, 89368), (376, 55855), (470, 44684), (940, 22342), (1880, 11171)]