21787389

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6007}}^1$

素因数の和:6057

約数の個数: 24

約数和(自身を含む): 34990592

約数和(自身を除く): 13203203

約数列:

[1, 3, 9, 13, 31, 39, 93, 117, 279, 403, 1209, 3627, 6007, 18021, 54063, 78091, 186217, 234273, 558651, 702819, 1675953, 2420821, 7262463, 21787389]

約数ペア:

[(1, 21787389), (3, 7262463), (9, 2420821), (13, 1675953), (31, 702819), (39, 558651), (93, 234273), (117, 186217), (279, 78091), (403, 54063), (1209, 18021), (3627, 6007)]