18081357

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 28514304

約数和(自身を除く): 10432947

約数列:

[1, 3, 7, 21, 67, 71, 181, 201, 213, 469, 497, 543, 1267, 1407, 1491, 3801, 4757, 12127, 12851, 14271, 33299, 36381, 38553, 84889, 89957, 99897, 254667, 269871, 861017, 2583051, 6027119, 18081357]

約数ペア:

[(1, 18081357), (3, 6027119), (7, 2583051), (21, 861017), (67, 269871), (71, 254667), (181, 99897), (201, 89957), (213, 84889), (469, 38553), (497, 36381), (543, 33299), (1267, 14271), (1407, 12851), (1491, 12127), (3801, 4757)]