18875265

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{643}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 32148480

約数和(自身を除く): 13273215

約数列:

[1, 3, 5, 15, 19, 57, 95, 103, 285, 309, 515, 643, 1545, 1929, 1957, 3215, 5871, 9645, 9785, 12217, 29355, 36651, 61085, 66229, 183255, 198687, 331145, 993435, 1258351, 3775053, 6291755, 18875265]

約数ペア:

[(1, 18875265), (3, 6291755), (5, 3775053), (15, 1258351), (19, 993435), (57, 331145), (95, 198687), (103, 183255), (285, 66229), (309, 61085), (515, 36651), (643, 29355), (1545, 12217), (1929, 9785), (1957, 9645), (3215, 5871)]