4421780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 10281600

約数和(自身を除く): 5859820

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 101, 110, 199, 202, 220, 398, 404, 505, 796, 995, 1010, 1111, 1990, 2020, 2189, 2222, 3980, 4378, 4444, 5555, 8756, 10945, 11110, 20099, 21890, 22220, 40198, 43780, 80396, 100495, 200990, 221089, 401980, 442178, 884356, 1105445, 2210890, 4421780]

約数ペア:

[(1, 4421780), (2, 2210890), (4, 1105445), (5, 884356), (10, 442178), (11, 401980), (20, 221089), (22, 200990), (44, 100495), (55, 80396), (101, 43780), (110, 40198), (199, 22220), (202, 21890), (220, 20099), (398, 11110), (404, 10945), (505, 8756), (796, 5555), (995, 4444), (1010, 4378), (1111, 3980), (1990, 2222), (2020, 2189)]