21102678

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{68963}}^1$

素因数の和:68988

約数の個数: 24

約数和(自身を含む): 48412728

約数和(自身を除く): 27310050

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306, 68963, 137926, 206889, 413778, 620667, 1172371, 1241334, 2344742, 3517113, 7034226, 10551339, 21102678]

約数ペア:

[(1, 21102678), (2, 10551339), (3, 7034226), (6, 3517113), (9, 2344742), (17, 1241334), (18, 1172371), (34, 620667), (51, 413778), (102, 206889), (153, 137926), (306, 68963)]