7217931

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 11501568

約数和(自身を除く): 4283637

約数列:

[1, 3, 7, 21, 47, 71, 103, 141, 213, 309, 329, 497, 721, 987, 1491, 2163, 3337, 4841, 7313, 10011, 14523, 21939, 23359, 33887, 51191, 70077, 101661, 153573, 343711, 1031133, 2405977, 7217931]

約数ペア:

[(1, 7217931), (3, 2405977), (7, 1031133), (21, 343711), (47, 153573), (71, 101661), (103, 70077), (141, 51191), (213, 33887), (309, 23359), (329, 21939), (497, 14523), (721, 10011), (987, 7313), (1491, 4841), (2163, 3337)]