78401320

素因数分解:

$2^3\times 5^1\times {\mathrm{1960033}}^1$

素因数の和:1960044

約数の個数: 16

約数和(自身を含む): 176403060

約数和(自身を除く): 98001740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1960033, 3920066, 7840132, 9800165, 15680264, 19600330, 39200660, 78401320]

約数ペア:

[(1, 78401320), (2, 39200660), (4, 19600330), (5, 15680264), (8, 9800165), (10, 7840132), (20, 3920066), (40, 1960033)]