290872760

素因数分解:

$2^3\times 5^1\times {\mathrm{971}}^1\times {\mathrm{7489}}^1$

素因数の和:8471

約数の個数: 32

約数和(自身を含む): 655225200

約数和(自身を除く): 364352440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 971, 1942, 3884, 4855, 7489, 7768, 9710, 14978, 19420, 29956, 37445, 38840, 59912, 74890, 149780, 299560, 7271819, 14543638, 29087276, 36359095, 58174552, 72718190, 145436380, 290872760]

約数ペア:

[(1, 290872760), (2, 145436380), (4, 72718190), (5, 58174552), (8, 36359095), (10, 29087276), (20, 14543638), (40, 7271819), (971, 299560), (1942, 149780), (3884, 74890), (4855, 59912), (7489, 38840), (7768, 37445), (9710, 29956), (14978, 19420)]