21787570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{439}}^1\times {\mathrm{709}}^1$

素因数の和:1162

約数の個数: 32

約数和(自身を含む): 44985600

約数和(自身を除く): 23198030

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 439, 709, 878, 1418, 2195, 3073, 3545, 4390, 4963, 6146, 7090, 9926, 15365, 24815, 30730, 49630, 311251, 622502, 1556255, 2178757, 3112510, 4357514, 10893785, 21787570]

約数ペア:

[(1, 21787570), (2, 10893785), (5, 4357514), (7, 3112510), (10, 2178757), (14, 1556255), (35, 622502), (70, 311251), (439, 49630), (709, 30730), (878, 24815), (1418, 15365), (2195, 9926), (3073, 7090), (3545, 6146), (4390, 4963)]