1078640

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:249

約数の個数: 40

約数和(自身を含む): 2551920

約数和(自身を除く): 1473280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 139, 194, 278, 388, 485, 556, 695, 776, 970, 1112, 1390, 1552, 1940, 2224, 2780, 3880, 5560, 7760, 11120, 13483, 26966, 53932, 67415, 107864, 134830, 215728, 269660, 539320, 1078640]

約数ペア:

[(1, 1078640), (2, 539320), (4, 269660), (5, 215728), (8, 134830), (10, 107864), (16, 67415), (20, 53932), (40, 26966), (80, 13483), (97, 11120), (139, 7760), (194, 5560), (278, 3880), (388, 2780), (485, 2224), (556, 1940), (695, 1552), (776, 1390), (970, 1112)]