17818690

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{20021}}^1$

素因数の和:20117

約数の個数: 16

約数和(自身を含む): 32435640

約数和(自身を除く): 14616950

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 20021, 40042, 100105, 200210, 1781869, 3563738, 8909345, 17818690]

約数ペア:

[(1, 17818690), (2, 8909345), (5, 3563738), (10, 1781869), (89, 200210), (178, 100105), (445, 40042), (890, 20021)]