21586821

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{311}}^1\times {\mathrm{1361}}^1$

素因数の和:1692

約数の個数: 16

約数和(自身を含む): 30595968

約数和(自身を除く): 9009147

約数列:

[1, 3, 17, 51, 311, 933, 1361, 4083, 5287, 15861, 23137, 69411, 423271, 1269813, 7195607, 21586821]

約数ペア:

[(1, 21586821), (3, 7195607), (17, 1269813), (51, 423271), (311, 69411), (933, 23137), (1361, 15861), (4083, 5287)]