989801421

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{396079}}^1$

素因数の和:396113

約数の個数: 24

約数和(自身を含む): 1625512320

約数和(自身を除く): 635710899

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 396079, 1188237, 2772553, 6733343, 8317659, 19407871, 20200029, 47133401, 58223613, 141400203, 329933807, 989801421]

約数ペア:

[(1, 989801421), (3, 329933807), (7, 141400203), (17, 58223613), (21, 47133401), (49, 20200029), (51, 19407871), (119, 8317659), (147, 6733343), (357, 2772553), (833, 1188237), (2499, 396079)]