20595925

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:107

約数の個数: 72

約数和(自身を含む): 33587136

約数和(自身を除く): 12991211

約数列:

[1, 5, 7, 17, 23, 25, 35, 43, 49, 85, 115, 119, 161, 175, 215, 245, 301, 391, 425, 575, 595, 731, 805, 833, 989, 1075, 1127, 1225, 1505, 1955, 2107, 2737, 2975, 3655, 4025, 4165, 4945, 5117, 5635, 6923, 7525, 9775, 10535, 13685, 16813, 18275, 19159, 20825, 24725, 25585, 28175, 34615, 35819, 48461, 52675, 68425, 84065, 95795, 117691, 127925, 173075, 179095, 242305, 420325, 478975, 588455, 823837, 895475, 1211525, 2942275, 4119185, 20595925]

約数ペア:

[(1, 20595925), (5, 4119185), (7, 2942275), (17, 1211525), (23, 895475), (25, 823837), (35, 588455), (43, 478975), (49, 420325), (85, 242305), (115, 179095), (119, 173075), (161, 127925), (175, 117691), (215, 95795), (245, 84065), (301, 68425), (391, 52675), (425, 48461), (575, 35819), (595, 34615), (731, 28175), (805, 25585), (833, 24725), (989, 20825), (1075, 19159), (1127, 18275), (1225, 16813), (1505, 13685), (1955, 10535), (2107, 9775), (2737, 7525), (2975, 6923), (3655, 5635), (4025, 5117), (4165, 4945)]