20870031

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 35597184

約数和(自身を除く): 14727153

約数列:

[1, 3, 7, 13, 21, 39, 49, 67, 91, 147, 163, 201, 273, 469, 489, 637, 871, 1141, 1407, 1911, 2119, 2613, 3283, 3423, 6097, 6357, 7987, 9849, 10921, 14833, 18291, 23961, 32763, 42679, 44499, 76447, 103831, 128037, 141973, 229341, 311493, 425919, 535129, 993811, 1605387, 2981433, 6956677, 20870031]

約数ペア:

[(1, 20870031), (3, 6956677), (7, 2981433), (13, 1605387), (21, 993811), (39, 535129), (49, 425919), (67, 311493), (91, 229341), (147, 141973), (163, 128037), (201, 103831), (273, 76447), (469, 44499), (489, 42679), (637, 32763), (871, 23961), (1141, 18291), (1407, 14833), (1911, 10921), (2119, 9849), (2613, 7987), (3283, 6357), (3423, 6097)]