78838420

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{30091}}^1$

素因数の和:30231

約数の個数: 24

約数和(自身を含む): 166830048

約数和(自身を除く): 87991628

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 30091, 60182, 120364, 150455, 300910, 601820, 3941921, 7883842, 15767684, 19709605, 39419210, 78838420]

約数ペア:

[(1, 78838420), (2, 39419210), (4, 19709605), (5, 15767684), (10, 7883842), (20, 3941921), (131, 601820), (262, 300910), (524, 150455), (655, 120364), (1310, 60182), (2620, 30091)]