21309993

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{2731}}^1$

素因数の和:2774

約数の個数: 24

約数和(自身を含む): 33548960

約数和(自身を除く): 12238967

約数列:

[1, 3, 9, 17, 27, 51, 153, 289, 459, 867, 2601, 2731, 7803, 8193, 24579, 46427, 73737, 139281, 417843, 789259, 1253529, 2367777, 7103331, 21309993]

約数ペア:

[(1, 21309993), (3, 7103331), (9, 2367777), (17, 1253529), (27, 789259), (51, 417843), (153, 139281), (289, 73737), (459, 46427), (867, 24579), (2601, 8193), (2731, 7803)]