65211280

素因数分解:

$2^4\times 5^1\times {\mathrm{815141}}^1$

素因数の和:815154

約数の個数: 20

約数和(自身を含む): 151616412

約数和(自身を除く): 86405132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 815141, 1630282, 3260564, 4075705, 6521128, 8151410, 13042256, 16302820, 32605640, 65211280]

約数ペア:

[(1, 65211280), (2, 32605640), (4, 16302820), (5, 13042256), (8, 8151410), (10, 6521128), (16, 4075705), (20, 3260564), (40, 1630282), (80, 815141)]