51354320

素因数分解:

$2^4\times 5^1\times {\mathrm{641929}}^1$

素因数の和:641942

約数の個数: 20

約数和(自身を含む): 119398980

約数和(自身を除く): 68044660

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641929, 1283858, 2567716, 3209645, 5135432, 6419290, 10270864, 12838580, 25677160, 51354320]

約数ペア:

[(1, 51354320), (2, 25677160), (4, 12838580), (5, 10270864), (8, 6419290), (10, 5135432), (16, 3209645), (20, 2567716), (40, 1283858), (80, 641929)]