21711855

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{727}}^1$

素因数の和:927

約数の個数: 32

約数和(自身を含む): 38158848

約数和(自身を除く): 16446993

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 181, 543, 727, 905, 1991, 2181, 2715, 3635, 5973, 7997, 9955, 10905, 23991, 29865, 39985, 119955, 131587, 394761, 657935, 1447457, 1973805, 4342371, 7237285, 21711855]

約数ペア:

[(1, 21711855), (3, 7237285), (5, 4342371), (11, 1973805), (15, 1447457), (33, 657935), (55, 394761), (165, 131587), (181, 119955), (543, 39985), (727, 29865), (905, 23991), (1991, 10905), (2181, 9955), (2715, 7997), (3635, 5973)]