21394791

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1097}}^1$

素因数の和:1311

約数の個数: 24

約数和(自身を含む): 33915024

約数和(自身を除く): 12520233

約数列:

[1, 3, 9, 11, 33, 99, 197, 591, 1097, 1773, 2167, 3291, 6501, 9873, 12067, 19503, 36201, 108603, 216109, 648327, 1944981, 2377199, 7131597, 21394791]

約数ペア:

[(1, 21394791), (3, 7131597), (9, 2377199), (11, 1944981), (33, 648327), (99, 216109), (197, 108603), (591, 36201), (1097, 19503), (1773, 12067), (2167, 9873), (3291, 6501)]