2131995280

素因数分解:

$2^4\times 5^1\times {\mathrm{26649941}}^1$

素因数の和:26649954

約数の個数: 20

約数和(自身を含む): 4956889212

約数和(自身を除く): 2824893932

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 26649941, 53299882, 106599764, 133249705, 213199528, 266499410, 426399056, 532998820, 1065997640, 2131995280]

約数ペア:

[(1, 2131995280), (2, 1065997640), (4, 532998820), (5, 426399056), (8, 266499410), (10, 213199528), (16, 133249705), (20, 106599764), (40, 53299882), (80, 26649941)]