20553771

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 32555520

約数和(自身を除く): 12001749

約数列:

[1, 3, 7, 21, 53, 59, 159, 177, 313, 371, 413, 939, 1113, 1239, 2191, 3127, 6573, 9381, 16589, 18467, 21889, 49767, 55401, 65667, 116123, 129269, 348369, 387807, 978751, 2936253, 6851257, 20553771]

約数ペア:

[(1, 20553771), (3, 6851257), (7, 2936253), (21, 978751), (53, 387807), (59, 348369), (159, 129269), (177, 116123), (313, 65667), (371, 55401), (413, 49767), (939, 21889), (1113, 18467), (1239, 16589), (2191, 9381), (3127, 6573)]