20880027

素因数分解:

$3^2\times 7^2\times {\mathrm{113}}^1\times {\mathrm{419}}^1$

素因数の和:552

約数の個数: 36

約数和(自身を含む): 35479080

約数和(自身を除く): 14599053

約数列:

[1, 3, 7, 9, 21, 49, 63, 113, 147, 339, 419, 441, 791, 1017, 1257, 2373, 2933, 3771, 5537, 7119, 8799, 16611, 20531, 26397, 47347, 49833, 61593, 142041, 184779, 331429, 426123, 994287, 2320003, 2982861, 6960009, 20880027]

約数ペア:

[(1, 20880027), (3, 6960009), (7, 2982861), (9, 2320003), (21, 994287), (49, 426123), (63, 331429), (113, 184779), (147, 142041), (339, 61593), (419, 49833), (441, 47347), (791, 26397), (1017, 20531), (1257, 16611), (2373, 8799), (2933, 7119), (3771, 5537)]