20155272500

素因数分解:

$2^2\times 5^4\times {\mathrm{11}}^2\times {\mathrm{66629}}^1$

素因数の和:66675

約数の個数: 90

約数和(自身を含む): 48447405930

約数和(自身を除く): 28292133430

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 484, 500, 550, 605, 625, 1100, 1210, 1250, 1375, 2420, 2500, 2750, 3025, 5500, 6050, 6875, 12100, 13750, 15125, 27500, 30250, 60500, 66629, 75625, 133258, 151250, 266516, 302500, 333145, 666290, 732919, 1332580, 1465838, 1665725, 2931676, 3331450, 3664595, 6662900, 7329190, 8062109, 8328625, 14658380, 16124218, 16657250, 18322975, 32248436, 33314500, 36645950, 40310545, 41643125, 73291900, 80621090, 83286250, 91614875, 161242180, 166572500, 183229750, 201552725, 366459500, 403105450, 458074375, 806210900, 916148750, 1007763625, 1832297500, 2015527250, 4031054500, 5038818125, 10077636250, 20155272500]

約数ペア:

[(1, 20155272500), (2, 10077636250), (4, 5038818125), (5, 4031054500), (10, 2015527250), (11, 1832297500), (20, 1007763625), (22, 916148750), (25, 806210900), (44, 458074375), (50, 403105450), (55, 366459500), (100, 201552725), (110, 183229750), (121, 166572500), (125, 161242180), (220, 91614875), (242, 83286250), (250, 80621090), (275, 73291900), (484, 41643125), (500, 40310545), (550, 36645950), (605, 33314500), (625, 32248436), (1100, 18322975), (1210, 16657250), (1250, 16124218), (1375, 14658380), (2420, 8328625), (2500, 8062109), (2750, 7329190), (3025, 6662900), (5500, 3664595), (6050, 3331450), (6875, 2931676), (12100, 1665725), (13750, 1465838), (15125, 1332580), (27500, 732919), (30250, 666290), (60500, 333145), (66629, 302500), (75625, 266516), (133258, 151250)]