218974791

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12763}}^1$

素因数の和:12835

約数の個数: 32

約数和(自身を含む): 359434240

約数和(自身を除く): 140459449

約数列:

[1, 3, 7, 19, 21, 43, 57, 129, 133, 301, 399, 817, 903, 2451, 5719, 12763, 17157, 38289, 89341, 242497, 268023, 548809, 727491, 1646427, 1697479, 3841663, 5092437, 10427371, 11524989, 31282113, 72991597, 218974791]

約数ペア:

[(1, 218974791), (3, 72991597), (7, 31282113), (19, 11524989), (21, 10427371), (43, 5092437), (57, 3841663), (129, 1697479), (133, 1646427), (301, 727491), (399, 548809), (817, 268023), (903, 242497), (2451, 89341), (5719, 38289), (12763, 17157)]