21338955

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{3919}}^1$

素因数の和:3952

約数の個数: 36

約数和(自身を含む): 40666080

約数和(自身を除く): 19327125

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 121, 165, 363, 495, 605, 1089, 1815, 3919, 5445, 11757, 19595, 35271, 43109, 58785, 129327, 176355, 215545, 387981, 474199, 646635, 1422597, 1939905, 2370995, 4267791, 7112985, 21338955]

約数ペア:

[(1, 21338955), (3, 7112985), (5, 4267791), (9, 2370995), (11, 1939905), (15, 1422597), (33, 646635), (45, 474199), (55, 387981), (99, 215545), (121, 176355), (165, 129327), (363, 58785), (495, 43109), (605, 35271), (1089, 19595), (1815, 11757), (3919, 5445)]