65512171280

素因数分解:

$2^4\times 5^1\times {\mathrm{818902141}}^1$

素因数の和:818902154

約数の個数: 20

約数和(自身を含む): 152315798412

約数和(自身を除く): 86803627132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 818902141, 1637804282, 3275608564, 4094510705, 6551217128, 8189021410, 13102434256, 16378042820, 32756085640, 65512171280]

約数ペア:

[(1, 65512171280), (2, 32756085640), (4, 16378042820), (5, 13102434256), (8, 8189021410), (10, 6551217128), (16, 4094510705), (20, 3275608564), (40, 1637804282), (80, 818902141)]