21588861

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 36345024

約数和(自身を除く): 14756163

約数列:

[1, 3, 7, 17, 21, 49, 51, 53, 119, 147, 159, 163, 357, 371, 489, 833, 901, 1113, 1141, 2499, 2597, 2703, 2771, 3423, 6307, 7791, 7987, 8313, 8639, 18921, 19397, 23961, 25917, 44149, 58191, 60473, 132447, 135779, 146863, 181419, 407337, 423311, 440589, 1028041, 1269933, 3084123, 7196287, 21588861]

約数ペア:

[(1, 21588861), (3, 7196287), (7, 3084123), (17, 1269933), (21, 1028041), (49, 440589), (51, 423311), (53, 407337), (119, 181419), (147, 146863), (159, 135779), (163, 132447), (357, 60473), (371, 58191), (489, 44149), (833, 25917), (901, 23961), (1113, 19397), (1141, 18921), (2499, 8639), (2597, 8313), (2703, 7987), (2771, 7791), (3423, 6307)]