66404840

素因数分解:

$2^3\times 5^1\times {\mathrm{1660121}}^1$

素因数の和:1660132

約数の個数: 16

約数和(自身を含む): 149410980

約数和(自身を除く): 83006140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1660121, 3320242, 6640484, 8300605, 13280968, 16601210, 33202420, 66404840]

約数ペア:

[(1, 66404840), (2, 33202420), (4, 16601210), (5, 13280968), (8, 8300605), (10, 6640484), (20, 3320242), (40, 1660121)]