20389185

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7949}}^1$

素因数の和:7982

約数の個数: 32

約数和(自身を含む): 38160000

約数和(自身を除く): 17770815

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 7949, 23847, 39745, 71541, 119235, 151031, 214623, 357705, 453093, 755155, 1073115, 1359279, 2265465, 4077837, 6796395, 20389185]

約数ペア:

[(1, 20389185), (3, 6796395), (5, 4077837), (9, 2265465), (15, 1359279), (19, 1073115), (27, 755155), (45, 453093), (57, 357705), (95, 214623), (135, 151031), (171, 119235), (285, 71541), (513, 39745), (855, 23847), (2565, 7949)]