19742128

素因数分解:

$2^4\times 7^1\times {\mathrm{359}}^1\times {\mathrm{491}}^1$

素因数の和:865

約数の個数: 40

約数和(自身を含む): 43925760

約数和(自身を除く): 24183632

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 359, 491, 718, 982, 1436, 1964, 2513, 2872, 3437, 3928, 5026, 5744, 6874, 7856, 10052, 13748, 20104, 27496, 40208, 54992, 176269, 352538, 705076, 1233883, 1410152, 2467766, 2820304, 4935532, 9871064, 19742128]

約数ペア:

[(1, 19742128), (2, 9871064), (4, 4935532), (7, 2820304), (8, 2467766), (14, 1410152), (16, 1233883), (28, 705076), (56, 352538), (112, 176269), (359, 54992), (491, 40208), (718, 27496), (982, 20104), (1436, 13748), (1964, 10052), (2513, 7856), (2872, 6874), (3437, 5744), (3928, 5026)]