21162519

素因数分解:

$3^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2731}}^1$

素因数の和:2788

約数の個数: 32

約数和(自身を含む): 36718080

約数和(自身を除く): 15555561

約数列:

[1, 3, 7, 9, 21, 27, 41, 63, 123, 189, 287, 369, 861, 1107, 2583, 2731, 7749, 8193, 19117, 24579, 57351, 73737, 111971, 172053, 335913, 516159, 783797, 1007739, 2351391, 3023217, 7054173, 21162519]

約数ペア:

[(1, 21162519), (3, 7054173), (7, 3023217), (9, 2351391), (21, 1007739), (27, 783797), (41, 516159), (63, 335913), (123, 172053), (189, 111971), (287, 73737), (369, 57351), (861, 24579), (1107, 19117), (2583, 8193), (2731, 7749)]