19021880

素因数分解:

$2^3\times 5^1\times {\mathrm{499}}^1\times {\mathrm{953}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 42930000

約数和(自身を除く): 23908120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 499, 953, 998, 1906, 1996, 2495, 3812, 3992, 4765, 4990, 7624, 9530, 9980, 19060, 19960, 38120, 475547, 951094, 1902188, 2377735, 3804376, 4755470, 9510940, 19021880]

約数ペア:

[(1, 19021880), (2, 9510940), (4, 4755470), (5, 3804376), (8, 2377735), (10, 1902188), (20, 951094), (40, 475547), (499, 38120), (953, 19960), (998, 19060), (1906, 9980), (1996, 9530), (2495, 7624), (3812, 4990), (3992, 4765)]