19510640

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5189}}^1$

素因数の和:5249

約数の個数: 40

約数和(自身を含む): 46336320

約数和(自身を除く): 26825680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5189, 10378, 20756, 25945, 41512, 51890, 83024, 103780, 207560, 243883, 415120, 487766, 975532, 1219415, 1951064, 2438830, 3902128, 4877660, 9755320, 19510640]

約数ペア:

[(1, 19510640), (2, 9755320), (4, 4877660), (5, 3902128), (8, 2438830), (10, 1951064), (16, 1219415), (20, 975532), (40, 487766), (47, 415120), (80, 243883), (94, 207560), (188, 103780), (235, 83024), (376, 51890), (470, 41512), (752, 25945), (940, 20756), (1880, 10378), (3760, 5189)]