855819980

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{347}}^1\times {\mathrm{971}}^1$

素因数の和:1454

約数の個数: 48

約数和(自身を含む): 1818464256

約数和(自身を除く): 962644276

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 347, 508, 635, 694, 971, 1270, 1388, 1735, 1942, 2540, 3470, 3884, 4855, 6940, 9710, 19420, 44069, 88138, 123317, 176276, 220345, 246634, 336937, 440690, 493268, 616585, 673874, 881380, 1233170, 1347748, 1684685, 2466340, 3369370, 6738740, 42790999, 85581998, 171163996, 213954995, 427909990, 855819980]

約数ペア:

[(1, 855819980), (2, 427909990), (4, 213954995), (5, 171163996), (10, 85581998), (20, 42790999), (127, 6738740), (254, 3369370), (347, 2466340), (508, 1684685), (635, 1347748), (694, 1233170), (971, 881380), (1270, 673874), (1388, 616585), (1735, 493268), (1942, 440690), (2540, 336937), (3470, 246634), (3884, 220345), (4855, 176276), (6940, 123317), (9710, 88138), (19420, 44069)]