20487447575

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{983791}}^1$

素因数の和:983832

約数の個数: 36

約数和(自身を含む): 31290488352

約数和(自身を除く): 10803040777

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 175, 245, 425, 595, 833, 1225, 2975, 4165, 20825, 983791, 4918955, 6886537, 16724447, 24594775, 34432685, 48205759, 83622235, 117071129, 172163425, 241028795, 418111175, 585355645, 819497903, 1205143975, 2926778225, 4097489515, 20487447575]

約数ペア:

[(1, 20487447575), (5, 4097489515), (7, 2926778225), (17, 1205143975), (25, 819497903), (35, 585355645), (49, 418111175), (85, 241028795), (119, 172163425), (175, 117071129), (245, 83622235), (425, 48205759), (595, 34432685), (833, 24594775), (1225, 16724447), (2975, 6886537), (4165, 4918955), (20825, 983791)]