20161661500

素因数分解:

$2^2\times 5^3\times {\mathrm{569}}^1\times {\mathrm{70867}}^1$

素因数の和:71455

約数の個数: 48

約数和(自身を含む): 44111077920

約数和(自身を除く): 23949416420

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 250, 500, 569, 1138, 2276, 2845, 5690, 11380, 14225, 28450, 56900, 70867, 71125, 141734, 142250, 283468, 284500, 354335, 708670, 1417340, 1771675, 3543350, 7086700, 8858375, 17716750, 35433500, 40323323, 80646646, 161293292, 201616615, 403233230, 806466460, 1008083075, 2016166150, 4032332300, 5040415375, 10080830750, 20161661500]

約数ペア:

[(1, 20161661500), (2, 10080830750), (4, 5040415375), (5, 4032332300), (10, 2016166150), (20, 1008083075), (25, 806466460), (50, 403233230), (100, 201616615), (125, 161293292), (250, 80646646), (500, 40323323), (569, 35433500), (1138, 17716750), (2276, 8858375), (2845, 7086700), (5690, 3543350), (11380, 1771675), (14225, 1417340), (28450, 708670), (56900, 354335), (70867, 284500), (71125, 283468), (141734, 142250)]