28735880

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11777}}^1$

素因数の和:11849

約数の個数: 32

約数和(自身を含む): 65721240

約数和(自身を除く): 36985360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 11777, 23554, 47108, 58885, 94216, 117770, 235540, 471080, 718397, 1436794, 2873588, 3591985, 5747176, 7183970, 14367940, 28735880]

約数ペア:

[(1, 28735880), (2, 14367940), (4, 7183970), (5, 5747176), (8, 3591985), (10, 2873588), (20, 1436794), (40, 718397), (61, 471080), (122, 235540), (244, 117770), (305, 94216), (488, 58885), (610, 47108), (1220, 23554), (2440, 11777)]