20687385

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{2617}}^1$

素因数の和:2673

約数の個数: 32

約数和(自身を含む): 36191232

約数和(自身を除く): 15503847

約数列:

[1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2617, 2635, 7851, 7905, 13085, 39255, 44489, 81127, 133467, 222445, 243381, 405635, 667335, 1216905, 1379159, 4137477, 6895795, 20687385]

約数ペア:

[(1, 20687385), (3, 6895795), (5, 4137477), (15, 1379159), (17, 1216905), (31, 667335), (51, 405635), (85, 243381), (93, 222445), (155, 133467), (255, 81127), (465, 44489), (527, 39255), (1581, 13085), (2617, 7905), (2635, 7851)]