198727821

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{457}}^1\times {\mathrm{2543}}^1$

素因数の和:3025

約数の個数: 24

約数和(自身を含む): 302939520

約数和(自身を除く): 104211699

約数列:

[1, 3, 9, 19, 57, 171, 457, 1371, 2543, 4113, 7629, 8683, 22887, 26049, 48317, 78147, 144951, 434853, 1162151, 3486453, 10459359, 22080869, 66242607, 198727821]

約数ペア:

[(1, 198727821), (3, 66242607), (9, 22080869), (19, 10459359), (57, 3486453), (171, 1162151), (457, 434853), (1371, 144951), (2543, 78147), (4113, 48317), (7629, 26049), (8683, 22887)]