66450920

素因数分解:

$2^3\times 5^1\times {\mathrm{1661273}}^1$

素因数の和:1661284

約数の個数: 16

約数和(自身を含む): 149514660

約数和(自身を除く): 83063740

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1661273, 3322546, 6645092, 8306365, 13290184, 16612730, 33225460, 66450920]

約数ペア:

[(1, 66450920), (2, 33225460), (4, 16612730), (5, 13290184), (8, 8306365), (10, 6645092), (20, 3322546), (40, 1661273)]