18939291

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 30205440

約数和(自身を除く): 11266149

約数列:

[1, 3, 7, 21, 29, 87, 137, 203, 227, 411, 609, 681, 959, 1589, 2877, 3973, 4767, 6583, 11919, 19749, 27811, 31099, 46081, 83433, 93297, 138243, 217693, 653079, 901871, 2705613, 6313097, 18939291]

約数ペア:

[(1, 18939291), (3, 6313097), (7, 2705613), (21, 901871), (29, 653079), (87, 217693), (137, 138243), (203, 93297), (227, 83433), (411, 46081), (609, 31099), (681, 27811), (959, 19749), (1589, 11919), (2877, 6583), (3973, 4767)]