20643340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21961}}^1$

素因数の和:22017

約数の個数: 24

約数和(自身を含む): 44275392

約数和(自身を除く): 23632052

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21961, 43922, 87844, 109805, 219610, 439220, 1032167, 2064334, 4128668, 5160835, 10321670, 20643340]

約数ペア:

[(1, 20643340), (2, 10321670), (4, 5160835), (5, 4128668), (10, 2064334), (20, 1032167), (47, 439220), (94, 219610), (188, 109805), (235, 87844), (470, 43922), (940, 21961)]