21348040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76243}}^1$

素因数の和:76261

約数の個数: 32

約数和(自身を含む): 54895680

約数和(自身を除く): 33547640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76243, 152486, 304972, 381215, 533701, 609944, 762430, 1067402, 1524860, 2134804, 2668505, 3049720, 4269608, 5337010, 10674020, 21348040]

約数ペア:

[(1, 21348040), (2, 10674020), (4, 5337010), (5, 4269608), (7, 3049720), (8, 2668505), (10, 2134804), (14, 1524860), (20, 1067402), (28, 762430), (35, 609944), (40, 533701), (56, 381215), (70, 304972), (140, 152486), (280, 76243)]