78581240

素因数分解:

$2^3\times 5^1\times {\mathrm{1964531}}^1$

素因数の和:1964542

約数の個数: 16

約数和(自身を含む): 176807880

約数和(自身を除く): 98226640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1964531, 3929062, 7858124, 9822655, 15716248, 19645310, 39290620, 78581240]

約数ペア:

[(1, 78581240), (2, 39290620), (4, 19645310), (5, 15716248), (8, 9822655), (10, 7858124), (20, 3929062), (40, 1964531)]