21806811

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{6427}}^1$

素因数の和:6475

約数の個数: 24

約数和(自身を含む): 35096880

約数和(自身を除く): 13290069

約数列:

[1, 3, 9, 13, 29, 39, 87, 117, 261, 377, 1131, 3393, 6427, 19281, 57843, 83551, 186383, 250653, 559149, 751959, 1677447, 2422979, 7268937, 21806811]

約数ペア:

[(1, 21806811), (3, 7268937), (9, 2422979), (13, 1677447), (29, 751959), (39, 559149), (87, 250653), (117, 186383), (261, 83551), (377, 57843), (1131, 19281), (3393, 6427)]