638671491

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{577}}^1\times {\mathrm{6473}}^1$

素因数の和:7075

約数の個数: 24

約数和(自身を含む): 972912720

約数和(自身を除く): 334241229

約数列:

[1, 3, 9, 19, 57, 171, 577, 1731, 5193, 6473, 10963, 19419, 32889, 58257, 98667, 122987, 368961, 1106883, 3734921, 11204763, 33614289, 70963499, 212890497, 638671491]

約数ペア:

[(1, 638671491), (3, 212890497), (9, 70963499), (19, 33614289), (57, 11204763), (171, 3734921), (577, 1106883), (1731, 368961), (5193, 122987), (6473, 98667), (10963, 58257), (19419, 32889)]