19904012

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1193}}^1$

素因数の和:1337

約数の個数: 24

約数和(自身を含む): 36039696

約数和(自身を除く): 16135684

約数列:

[1, 2, 4, 43, 86, 97, 172, 194, 388, 1193, 2386, 4171, 4772, 8342, 16684, 51299, 102598, 115721, 205196, 231442, 462884, 4976003, 9952006, 19904012]

約数ペア:

[(1, 19904012), (2, 9952006), (4, 4976003), (43, 462884), (86, 231442), (97, 205196), (172, 115721), (194, 102598), (388, 51299), (1193, 16684), (2386, 8342), (4171, 4772)]