19874420

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21143}}^1$

素因数の和:21199

約数の個数: 24

約数和(自身を含む): 42626304

約数和(自身を除く): 22751884

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21143, 42286, 84572, 105715, 211430, 422860, 993721, 1987442, 3974884, 4968605, 9937210, 19874420]

約数ペア:

[(1, 19874420), (2, 9937210), (4, 4968605), (5, 3974884), (10, 1987442), (20, 993721), (47, 422860), (94, 211430), (188, 105715), (235, 84572), (470, 42286), (940, 21143)]