21091480

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{14251}}^1$

素因数の和:14299

約数の個数: 32

約数和(自身を含む): 48741840

約数和(自身を除く): 27650360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 14251, 28502, 57004, 71255, 114008, 142510, 285020, 527287, 570040, 1054574, 2109148, 2636435, 4218296, 5272870, 10545740, 21091480]

約数ペア:

[(1, 21091480), (2, 10545740), (4, 5272870), (5, 4218296), (8, 2636435), (10, 2109148), (20, 1054574), (37, 570040), (40, 527287), (74, 285020), (148, 142510), (185, 114008), (296, 71255), (370, 57004), (740, 28502), (1480, 14251)]