79981520

素因数分解:

$2^4\times 5^1\times {\mathrm{999769}}^1$

素因数の和:999782

約数の個数: 20

約数和(自身を含む): 185957220

約数和(自身を除く): 105975700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 999769, 1999538, 3999076, 4998845, 7998152, 9997690, 15996304, 19995380, 39990760, 79981520]

約数ペア:

[(1, 79981520), (2, 39990760), (4, 19995380), (5, 15996304), (8, 9997690), (10, 7998152), (16, 4998845), (20, 3999076), (40, 1999538), (80, 999769)]