81895520

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{73121}}^1$

素因数の和:73143

約数の個数: 48

約数和(自身を含む): 221120928

約数和(自身を除く): 139225408

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 73121, 146242, 292484, 365605, 511847, 584968, 731210, 1023694, 1169936, 1462420, 2047388, 2339872, 2559235, 2924840, 4094776, 5118470, 5849680, 8189552, 10236940, 11699360, 16379104, 20473880, 40947760, 81895520]

約数ペア:

[(1, 81895520), (2, 40947760), (4, 20473880), (5, 16379104), (7, 11699360), (8, 10236940), (10, 8189552), (14, 5849680), (16, 5118470), (20, 4094776), (28, 2924840), (32, 2559235), (35, 2339872), (40, 2047388), (56, 1462420), (70, 1169936), (80, 1023694), (112, 731210), (140, 584968), (160, 511847), (224, 365605), (280, 292484), (560, 146242), (1120, 73121)]