66736840

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{4289}}^1$

素因数の和:4689

約数の個数: 32

約数和(自身を含む): 150579000

約数和(自身を除く): 83842160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1556, 1945, 3112, 3890, 4289, 7780, 8578, 15560, 17156, 21445, 34312, 42890, 85780, 171560, 1668421, 3336842, 6673684, 8342105, 13347368, 16684210, 33368420, 66736840]

約数ペア:

[(1, 66736840), (2, 33368420), (4, 16684210), (5, 13347368), (8, 8342105), (10, 6673684), (20, 3336842), (40, 1668421), (389, 171560), (778, 85780), (1556, 42890), (1945, 34312), (3112, 21445), (3890, 17156), (4289, 15560), (7780, 8578)]