156980889680

素因数分解:

$2^4\times 5^1\times {\mathrm{1962261121}}^1$

素因数の和:1962261134

約数の個数: 20

約数和(自身を含む): 364980568692

約数和(自身を除く): 207999679012

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1962261121, 3924522242, 7849044484, 9811305605, 15698088968, 19622611210, 31396177936, 39245222420, 78490444840, 156980889680]

約数ペア:

[(1, 156980889680), (2, 78490444840), (4, 39245222420), (5, 31396177936), (8, 19622611210), (10, 15698088968), (16, 9811305605), (20, 7849044484), (40, 3924522242), (80, 1962261121)]