21339945

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2269}}^1$

素因数の和:2310

約数の個数: 48

約数和(自身を含む): 42494400

約数和(自身を除く): 21154455

約数列:

[1, 3, 5, 9, 11, 15, 19, 33, 45, 55, 57, 95, 99, 165, 171, 209, 285, 495, 627, 855, 1045, 1881, 2269, 3135, 6807, 9405, 11345, 20421, 24959, 34035, 43111, 74877, 102105, 124795, 129333, 215555, 224631, 374385, 387999, 474221, 646665, 1123155, 1422663, 1939995, 2371105, 4267989, 7113315, 21339945]

約数ペア:

[(1, 21339945), (3, 7113315), (5, 4267989), (9, 2371105), (11, 1939995), (15, 1422663), (19, 1123155), (33, 646665), (45, 474221), (55, 387999), (57, 374385), (95, 224631), (99, 215555), (165, 129333), (171, 124795), (209, 102105), (285, 74877), (495, 43111), (627, 34035), (855, 24959), (1045, 20421), (1881, 11345), (2269, 9405), (3135, 6807)]