18581289

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{229}}^1$

素因数の和:329

約数の個数: 32

約数和(自身を含む): 27688320

約数和(自身を除く): 9107031

約数列:

[1, 3, 17, 37, 43, 51, 111, 129, 229, 629, 687, 731, 1591, 1887, 2193, 3893, 4773, 8473, 9847, 11679, 25419, 27047, 29541, 81141, 144041, 167399, 364339, 432123, 502197, 1093017, 6193763, 18581289]

約数ペア:

[(1, 18581289), (3, 6193763), (17, 1093017), (37, 502197), (43, 432123), (51, 364339), (111, 167399), (129, 144041), (229, 81141), (629, 29541), (687, 27047), (731, 25419), (1591, 11679), (1887, 9847), (2193, 8473), (3893, 4773)]