27720385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{809}}^1$

素因数の和:921

約数の個数: 32

約数和(自身を含む): 41990400

約数和(自身を除く): 14270015

約数列:

[1, 5, 7, 11, 35, 55, 77, 89, 385, 445, 623, 809, 979, 3115, 4045, 4895, 5663, 6853, 8899, 28315, 34265, 44495, 62293, 72001, 311465, 360005, 504007, 792011, 2520035, 3960055, 5544077, 27720385]

約数ペア:

[(1, 27720385), (5, 5544077), (7, 3960055), (11, 2520035), (35, 792011), (55, 504007), (77, 360005), (89, 311465), (385, 72001), (445, 62293), (623, 44495), (809, 34265), (979, 28315), (3115, 8899), (4045, 6853), (4895, 5663)]