77920205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1987}}^1$

素因数の和:2057

約数の個数: 32

約数和(自身を含む): 109928448

約数和(自身を除く): 32008243

約数列:

[1, 5, 11, 23, 31, 55, 115, 155, 253, 341, 713, 1265, 1705, 1987, 3565, 7843, 9935, 21857, 39215, 45701, 61597, 109285, 228505, 307985, 502711, 677567, 1416731, 2513555, 3387835, 7083655, 15584041, 77920205]

約数ペア:

[(1, 77920205), (5, 15584041), (11, 7083655), (23, 3387835), (31, 2513555), (55, 1416731), (115, 677567), (155, 502711), (253, 307985), (341, 228505), (713, 109285), (1265, 61597), (1705, 45701), (1987, 39215), (3565, 21857), (7843, 9935)]