20820000775

素因数分解:

$5^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{738953}}^1$

素因数の和:739000

約数の個数: 36

約数和(自身を含む): 31337561232

約数和(自身を除く): 10517560457

約数列:

[1, 5, 7, 23, 25, 35, 49, 115, 161, 175, 245, 575, 805, 1127, 1225, 4025, 5635, 28175, 738953, 3694765, 5172671, 16995919, 18473825, 25863355, 36208697, 84979595, 118971433, 129316775, 181043485, 424897975, 594857165, 832800031, 905217425, 2974285825, 4164000155, 20820000775]

約数ペア:

[(1, 20820000775), (5, 4164000155), (7, 2974285825), (23, 905217425), (25, 832800031), (35, 594857165), (49, 424897975), (115, 181043485), (161, 129316775), (175, 118971433), (245, 84979595), (575, 36208697), (805, 25863355), (1127, 18473825), (1225, 16995919), (4025, 5172671), (5635, 3694765), (28175, 738953)]