19903736

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{4721}}^1$

素因数の和:4775

約数の個数: 32

約数和(自身を含む): 40798080

約数和(自身を除く): 20894344

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 248, 527, 1054, 2108, 4216, 4721, 9442, 18884, 37768, 80257, 146351, 160514, 292702, 321028, 585404, 642056, 1170808, 2487967, 4975934, 9951868, 19903736]

約数ペア:

[(1, 19903736), (2, 9951868), (4, 4975934), (8, 2487967), (17, 1170808), (31, 642056), (34, 585404), (62, 321028), (68, 292702), (124, 160514), (136, 146351), (248, 80257), (527, 37768), (1054, 18884), (2108, 9442), (4216, 4721)]