20281544

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{757}}^1$

素因数の和:977

約数の個数: 32

約数和(自身を含む): 40522680

約数和(自身を除く): 20241136

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 197, 394, 757, 788, 1514, 1576, 3028, 3349, 6056, 6698, 12869, 13396, 25738, 26792, 51476, 102952, 149129, 298258, 596516, 1193032, 2535193, 5070386, 10140772, 20281544]

約数ペア:

[(1, 20281544), (2, 10140772), (4, 5070386), (8, 2535193), (17, 1193032), (34, 596516), (68, 298258), (136, 149129), (197, 102952), (394, 51476), (757, 26792), (788, 25738), (1514, 13396), (1576, 12869), (3028, 6698), (3349, 6056)]