19671520

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11177}}^1$

素因数の和:11203

約数の個数: 48

約数和(自身を含む): 50703408

約数和(自身を除く): 31031888

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11177, 22354, 44708, 55885, 89416, 111770, 122947, 178832, 223540, 245894, 357664, 447080, 491788, 614735, 894160, 983576, 1229470, 1788320, 1967152, 2458940, 3934304, 4917880, 9835760, 19671520]

約数ペア:

[(1, 19671520), (2, 9835760), (4, 4917880), (5, 3934304), (8, 2458940), (10, 1967152), (11, 1788320), (16, 1229470), (20, 983576), (22, 894160), (32, 614735), (40, 491788), (44, 447080), (55, 357664), (80, 245894), (88, 223540), (110, 178832), (160, 122947), (176, 111770), (220, 89416), (352, 55885), (440, 44708), (880, 22354), (1760, 11177)]