78240440

素因数分解:

$2^3\times 5^1\times {\mathrm{1956011}}^1$

素因数の和:1956022

約数の個数: 16

約数和(自身を含む): 176041080

約数和(自身を除く): 97800640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1956011, 3912022, 7824044, 9780055, 15648088, 19560110, 39120220, 78240440]

約数ペア:

[(1, 78240440), (2, 39120220), (4, 19560110), (5, 15648088), (8, 9780055), (10, 7824044), (20, 3912022), (40, 1956011)]