20218000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{919}}^1$

素因数の和:953

約数の個数: 80

約数和(自身を含む): 53389440

約数和(自身を除く): 33171440

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 880, 919, 1000, 1100, 1375, 1838, 2000, 2200, 2750, 3676, 4400, 4595, 5500, 7352, 9190, 10109, 11000, 14704, 18380, 20218, 22000, 22975, 36760, 40436, 45950, 50545, 73520, 80872, 91900, 101090, 114875, 161744, 183800, 202180, 229750, 252725, 367600, 404360, 459500, 505450, 808720, 919000, 1010900, 1263625, 1838000, 2021800, 2527250, 4043600, 5054500, 10109000, 20218000]

約数ペア:

[(1, 20218000), (2, 10109000), (4, 5054500), (5, 4043600), (8, 2527250), (10, 2021800), (11, 1838000), (16, 1263625), (20, 1010900), (22, 919000), (25, 808720), (40, 505450), (44, 459500), (50, 404360), (55, 367600), (80, 252725), (88, 229750), (100, 202180), (110, 183800), (125, 161744), (176, 114875), (200, 101090), (220, 91900), (250, 80872), (275, 73520), (400, 50545), (440, 45950), (500, 40436), (550, 36760), (880, 22975), (919, 22000), (1000, 20218), (1100, 18380), (1375, 14704), (1838, 11000), (2000, 10109), (2200, 9190), (2750, 7352), (3676, 5500), (4400, 4595)]