21208671

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{3631}}^1$

素因数の和:3707

約数の個数: 24

約数和(自身を含む): 33995520

約数和(自身を除く): 12786849

約数列:

[1, 3, 9, 11, 33, 59, 99, 177, 531, 649, 1947, 3631, 5841, 10893, 32679, 39941, 119823, 214229, 359469, 642687, 1928061, 2356519, 7069557, 21208671]

約数ペア:

[(1, 21208671), (3, 7069557), (9, 2356519), (11, 1928061), (33, 642687), (59, 359469), (99, 214229), (177, 119823), (531, 39941), (649, 32679), (1947, 10893), (3631, 5841)]