66913480

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{3407}}^1$

素因数の和:3909

約数の個数: 32

約数和(自身を含む): 150906240

約数和(自身を除く): 83992760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3407, 3928, 4910, 6814, 9820, 13628, 17035, 19640, 27256, 34070, 68140, 136280, 1672837, 3345674, 6691348, 8364185, 13382696, 16728370, 33456740, 66913480]

約数ペア:

[(1, 66913480), (2, 33456740), (4, 16728370), (5, 13382696), (8, 8364185), (10, 6691348), (20, 3345674), (40, 1672837), (491, 136280), (982, 68140), (1964, 34070), (2455, 27256), (3407, 19640), (3928, 17035), (4910, 13628), (6814, 9820)]