20168500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:242

約数の個数: 96

約数和(自身を含む): 50843520

約数和(自身を除く): 30675020

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 125, 190, 193, 209, 220, 250, 275, 380, 386, 418, 475, 500, 550, 772, 836, 950, 965, 1045, 1100, 1375, 1900, 1930, 2090, 2123, 2375, 2750, 3667, 3860, 4180, 4246, 4750, 4825, 5225, 5500, 7334, 8492, 9500, 9650, 10450, 10615, 14668, 18335, 19300, 20900, 21230, 24125, 26125, 36670, 40337, 42460, 48250, 52250, 53075, 73340, 80674, 91675, 96500, 104500, 106150, 161348, 183350, 201685, 212300, 265375, 366700, 403370, 458375, 530750, 806740, 916750, 1008425, 1061500, 1833500, 2016850, 4033700, 5042125, 10084250, 20168500]

約数ペア:

[(1, 20168500), (2, 10084250), (4, 5042125), (5, 4033700), (10, 2016850), (11, 1833500), (19, 1061500), (20, 1008425), (22, 916750), (25, 806740), (38, 530750), (44, 458375), (50, 403370), (55, 366700), (76, 265375), (95, 212300), (100, 201685), (110, 183350), (125, 161348), (190, 106150), (193, 104500), (209, 96500), (220, 91675), (250, 80674), (275, 73340), (380, 53075), (386, 52250), (418, 48250), (475, 42460), (500, 40337), (550, 36670), (772, 26125), (836, 24125), (950, 21230), (965, 20900), (1045, 19300), (1100, 18335), (1375, 14668), (1900, 10615), (1930, 10450), (2090, 9650), (2123, 9500), (2375, 8492), (2750, 7334), (3667, 5500), (3860, 5225), (4180, 4825), (4246, 4750)]