17981955

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{9293}}^1$

素因数の和:9347

約数の個数: 24

約数和(自身を含む): 31897008

約数和(自身を除く): 13915053

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 9293, 27879, 46465, 83637, 139395, 399599, 418185, 1198797, 1997995, 3596391, 5993985, 17981955]

約数ペア:

[(1, 17981955), (3, 5993985), (5, 3596391), (9, 1997995), (15, 1198797), (43, 418185), (45, 399599), (129, 139395), (215, 83637), (387, 46465), (645, 27879), (1935, 9293)]