21611601

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{419}}^1\times {\mathrm{521}}^1$

素因数の和:957

約数の個数: 24

約数和(自身を含む): 34201440

約数和(自身を除く): 12589839

約数列:

[1, 3, 9, 11, 33, 99, 419, 521, 1257, 1563, 3771, 4609, 4689, 5731, 13827, 17193, 41481, 51579, 218299, 654897, 1964691, 2401289, 7203867, 21611601]

約数ペア:

[(1, 21611601), (3, 7203867), (9, 2401289), (11, 1964691), (33, 654897), (99, 218299), (419, 51579), (521, 41481), (1257, 17193), (1563, 13827), (3771, 5731), (4609, 4689)]