80719580

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{30809}}^1$

素因数の和:30949

約数の個数: 24

約数和(自身を含む): 170810640

約数和(自身を除く): 90091060

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 30809, 61618, 123236, 154045, 308090, 616180, 4035979, 8071958, 16143916, 20179895, 40359790, 80719580]

約数ペア:

[(1, 80719580), (2, 40359790), (4, 20179895), (5, 16143916), (10, 8071958), (20, 4035979), (131, 616180), (262, 308090), (524, 154045), (655, 123236), (1310, 61618), (2620, 30809)]