19202920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2297}}^1$

素因数の和:2338

約数の個数: 64

約数和(自身を含む): 49636800

約数和(自身を除く): 30433880

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 2297, 4180, 4594, 8360, 9188, 11485, 18376, 22970, 25267, 43643, 45940, 50534, 87286, 91880, 101068, 126335, 174572, 202136, 218215, 252670, 349144, 436430, 480073, 505340, 872860, 960146, 1010680, 1745720, 1920292, 2400365, 3840584, 4800730, 9601460, 19202920]

約数ペア:

[(1, 19202920), (2, 9601460), (4, 4800730), (5, 3840584), (8, 2400365), (10, 1920292), (11, 1745720), (19, 1010680), (20, 960146), (22, 872860), (38, 505340), (40, 480073), (44, 436430), (55, 349144), (76, 252670), (88, 218215), (95, 202136), (110, 174572), (152, 126335), (190, 101068), (209, 91880), (220, 87286), (380, 50534), (418, 45940), (440, 43643), (760, 25267), (836, 22970), (1045, 18376), (1672, 11485), (2090, 9188), (2297, 8360), (4180, 4594)]