20854495

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 28728000

約数和(自身を除く): 7873505

約数列:

[1, 5, 17, 19, 37, 85, 95, 185, 323, 349, 629, 703, 1615, 1745, 3145, 3515, 5933, 6631, 11951, 12913, 29665, 33155, 59755, 64565, 112727, 219521, 245347, 563635, 1097605, 1226735, 4170899, 20854495]

約数ペア:

[(1, 20854495), (5, 4170899), (17, 1226735), (19, 1097605), (37, 563635), (85, 245347), (95, 219521), (185, 112727), (323, 64565), (349, 59755), (629, 33155), (703, 29665), (1615, 12913), (1745, 11951), (3145, 6631), (3515, 5933)]