65220560

素因数分解:

$2^4\times 5^1\times {\mathrm{815257}}^1$

素因数の和:815270

約数の個数: 20

約数和(自身を含む): 151637988

約数和(自身を除く): 86417428

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 815257, 1630514, 3261028, 4076285, 6522056, 8152570, 13044112, 16305140, 32610280, 65220560]

約数ペア:

[(1, 65220560), (2, 32610280), (4, 16305140), (5, 13044112), (8, 8152570), (10, 6522056), (16, 4076285), (20, 3261028), (40, 1630514), (80, 815257)]