20439045

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 39042432

約数和(自身を除く): 18603387

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 157, 165, 263, 471, 495, 785, 789, 1315, 1413, 1727, 2355, 2367, 2893, 3945, 5181, 7065, 8635, 8679, 11835, 14465, 15543, 25905, 26037, 41291, 43395, 77715, 123873, 130185, 206455, 371619, 454201, 619365, 1362603, 1858095, 2271005, 4087809, 6813015, 20439045]

約数ペア:

[(1, 20439045), (3, 6813015), (5, 4087809), (9, 2271005), (11, 1858095), (15, 1362603), (33, 619365), (45, 454201), (55, 371619), (99, 206455), (157, 130185), (165, 123873), (263, 77715), (471, 43395), (495, 41291), (785, 26037), (789, 25905), (1315, 15543), (1413, 14465), (1727, 11835), (2355, 8679), (2367, 8635), (2893, 7065), (3945, 5181)]