65347120

素因数分解:

$2^4\times 5^1\times {\mathrm{816839}}^1$

素因数の和:816852

約数の個数: 20

約数和(自身を含む): 151932240

約数和(自身を除く): 86585120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 816839, 1633678, 3267356, 4084195, 6534712, 8168390, 13069424, 16336780, 32673560, 65347120]

約数ペア:

[(1, 65347120), (2, 32673560), (4, 16336780), (5, 13069424), (8, 8168390), (10, 6534712), (16, 4084195), (20, 3267356), (40, 1633678), (80, 816839)]