21106525

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 30855168

約数和(自身を除く): 9748643

約数列:

[1, 5, 11, 23, 25, 47, 55, 71, 115, 235, 253, 275, 355, 517, 575, 781, 1081, 1175, 1265, 1633, 1775, 2585, 3337, 3905, 5405, 6325, 8165, 11891, 12925, 16685, 17963, 19525, 27025, 36707, 40825, 59455, 76751, 83425, 89815, 183535, 297275, 383755, 449075, 844261, 917675, 1918775, 4221305, 21106525]

約数ペア:

[(1, 21106525), (5, 4221305), (11, 1918775), (23, 917675), (25, 844261), (47, 449075), (55, 383755), (71, 297275), (115, 183535), (235, 89815), (253, 83425), (275, 76751), (355, 59455), (517, 40825), (575, 36707), (781, 27025), (1081, 19525), (1175, 17963), (1265, 16685), (1633, 12925), (1775, 11891), (2585, 8165), (3337, 6325), (3905, 5405)]