78565480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280591}}^1$

素因数の和:280609

約数の個数: 32

約数和(自身を含む): 202026240

約数和(自身を除く): 123460760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280591, 561182, 1122364, 1402955, 1964137, 2244728, 2805910, 3928274, 5611820, 7856548, 9820685, 11223640, 15713096, 19641370, 39282740, 78565480]

約数ペア:

[(1, 78565480), (2, 39282740), (4, 19641370), (5, 15713096), (7, 11223640), (8, 9820685), (10, 7856548), (14, 5611820), (20, 3928274), (28, 2805910), (35, 2244728), (40, 1964137), (56, 1402955), (70, 1122364), (140, 561182), (280, 280591)]