289957340

素因数分解:

$2^2\times 5^1\times {\mathrm{521}}^1\times {\mathrm{27827}}^1$

素因数の和:28357

約数の個数: 24

約数和(自身を含む): 610101072

約数和(自身を除く): 320143732

約数列:

[1, 2, 4, 5, 10, 20, 521, 1042, 2084, 2605, 5210, 10420, 27827, 55654, 111308, 139135, 278270, 556540, 14497867, 28995734, 57991468, 72489335, 144978670, 289957340]

約数ペア:

[(1, 289957340), (2, 144978670), (4, 72489335), (5, 57991468), (10, 28995734), (20, 14497867), (521, 556540), (1042, 278270), (2084, 139135), (2605, 111308), (5210, 55654), (10420, 27827)]