18403910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{23}}^2\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 40851216

約数和(自身を除く): 22447306

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 49, 70, 71, 98, 115, 142, 161, 230, 245, 322, 355, 490, 497, 529, 710, 805, 994, 1058, 1127, 1610, 1633, 2254, 2485, 2645, 3266, 3479, 3703, 4970, 5290, 5635, 6958, 7406, 8165, 11270, 11431, 16330, 17395, 18515, 22862, 25921, 34790, 37030, 37559, 51842, 57155, 75118, 80017, 114310, 129605, 160034, 187795, 259210, 262913, 375590, 400085, 525826, 800170, 1314565, 1840391, 2629130, 3680782, 9201955, 18403910]

約数ペア:

[(1, 18403910), (2, 9201955), (5, 3680782), (7, 2629130), (10, 1840391), (14, 1314565), (23, 800170), (35, 525826), (46, 400085), (49, 375590), (70, 262913), (71, 259210), (98, 187795), (115, 160034), (142, 129605), (161, 114310), (230, 80017), (245, 75118), (322, 57155), (355, 51842), (490, 37559), (497, 37030), (529, 34790), (710, 25921), (805, 22862), (994, 18515), (1058, 17395), (1127, 16330), (1610, 11431), (1633, 11270), (2254, 8165), (2485, 7406), (2645, 6958), (3266, 5635), (3479, 5290), (3703, 4970)]