20993976

素因数分解:

$2^3\times 3^2\times {\mathrm{43}}^1\times {\mathrm{6781}}^1$

素因数の和:6836

約数の個数: 48

約数和(自身を含む): 58189560

約数和(自身を除く): 37195584

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 43, 72, 86, 129, 172, 258, 344, 387, 516, 774, 1032, 1548, 3096, 6781, 13562, 20343, 27124, 40686, 54248, 61029, 81372, 122058, 162744, 244116, 291583, 488232, 583166, 874749, 1166332, 1749498, 2332664, 2624247, 3498996, 5248494, 6997992, 10496988, 20993976]

約数ペア:

[(1, 20993976), (2, 10496988), (3, 6997992), (4, 5248494), (6, 3498996), (8, 2624247), (9, 2332664), (12, 1749498), (18, 1166332), (24, 874749), (36, 583166), (43, 488232), (72, 291583), (86, 244116), (129, 162744), (172, 122058), (258, 81372), (344, 61029), (387, 54248), (516, 40686), (774, 27124), (1032, 20343), (1548, 13562), (3096, 6781)]