20147080

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:454

約数の個数: 64

約数和(自身を含む): 48211200

約数和(自身を除く): 28064120

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 61, 92, 115, 122, 184, 230, 244, 305, 359, 460, 488, 610, 718, 920, 1220, 1403, 1436, 1795, 2440, 2806, 2872, 3590, 5612, 7015, 7180, 8257, 11224, 14030, 14360, 16514, 21899, 28060, 33028, 41285, 43798, 56120, 66056, 82570, 87596, 109495, 165140, 175192, 218990, 330280, 437980, 503677, 875960, 1007354, 2014708, 2518385, 4029416, 5036770, 10073540, 20147080]

約数ペア:

[(1, 20147080), (2, 10073540), (4, 5036770), (5, 4029416), (8, 2518385), (10, 2014708), (20, 1007354), (23, 875960), (40, 503677), (46, 437980), (61, 330280), (92, 218990), (115, 175192), (122, 165140), (184, 109495), (230, 87596), (244, 82570), (305, 66056), (359, 56120), (460, 43798), (488, 41285), (610, 33028), (718, 28060), (920, 21899), (1220, 16514), (1403, 14360), (1436, 14030), (1795, 11224), (2440, 8257), (2806, 7180), (2872, 7015), (3590, 5612)]