21990959982

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{319237}}^1$

素因数の和:319377

約数の個数: 48

約数和(自身を含む): 49303116720

約数和(自身を除く): 27312156738

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 89, 129, 178, 258, 267, 387, 534, 774, 801, 1602, 3827, 7654, 11481, 22962, 34443, 68886, 319237, 638474, 957711, 1915422, 2873133, 5746266, 13727191, 27454382, 28412093, 41181573, 56824186, 82363146, 85236279, 123544719, 170472558, 247089438, 255708837, 511417674, 1221719999, 2443439998, 3665159997, 7330319994, 10995479991, 21990959982]

約数ペア:

[(1, 21990959982), (2, 10995479991), (3, 7330319994), (6, 3665159997), (9, 2443439998), (18, 1221719999), (43, 511417674), (86, 255708837), (89, 247089438), (129, 170472558), (178, 123544719), (258, 85236279), (267, 82363146), (387, 56824186), (534, 41181573), (774, 28412093), (801, 27454382), (1602, 13727191), (3827, 5746266), (7654, 2873133), (11481, 1915422), (22962, 957711), (34443, 638474), (68886, 319237)]