21095264

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 43028496

約数和(自身を除く): 21933232

約数列:

[1, 2, 4, 8, 16, 32, 61, 101, 107, 122, 202, 214, 244, 404, 428, 488, 808, 856, 976, 1616, 1712, 1952, 3232, 3424, 6161, 6527, 10807, 12322, 13054, 21614, 24644, 26108, 43228, 49288, 52216, 86456, 98576, 104432, 172912, 197152, 208864, 345824, 659227, 1318454, 2636908, 5273816, 10547632, 21095264]

約数ペア:

[(1, 21095264), (2, 10547632), (4, 5273816), (8, 2636908), (16, 1318454), (32, 659227), (61, 345824), (101, 208864), (107, 197152), (122, 172912), (202, 104432), (214, 98576), (244, 86456), (404, 52216), (428, 49288), (488, 43228), (808, 26108), (856, 24644), (976, 21614), (1616, 13054), (1712, 12322), (1952, 10807), (3232, 6527), (3424, 6161)]