19986744

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:340

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 31905096

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 107, 129, 172, 181, 214, 258, 321, 344, 362, 428, 516, 543, 642, 724, 856, 1032, 1086, 1284, 1448, 2172, 2568, 4344, 4601, 7783, 9202, 13803, 15566, 18404, 19367, 23349, 27606, 31132, 36808, 38734, 46698, 55212, 58101, 62264, 77468, 93396, 110424, 116202, 154936, 186792, 232404, 464808, 832781, 1665562, 2498343, 3331124, 4996686, 6662248, 9993372, 19986744]

約数ペア:

[(1, 19986744), (2, 9993372), (3, 6662248), (4, 4996686), (6, 3331124), (8, 2498343), (12, 1665562), (24, 832781), (43, 464808), (86, 232404), (107, 186792), (129, 154936), (172, 116202), (181, 110424), (214, 93396), (258, 77468), (321, 62264), (344, 58101), (362, 55212), (428, 46698), (516, 38734), (543, 36808), (642, 31132), (724, 27606), (856, 23349), (1032, 19367), (1086, 18404), (1284, 15566), (1448, 13803), (2172, 9202), (2568, 7783), (4344, 4601)]