20366500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2$

素因数の和:83

約数の個数: 144

約数和(自身を含む): 57972096

約数和(自身を除く): 37605596

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 25, 28, 35, 44, 46, 50, 55, 70, 77, 92, 100, 110, 115, 125, 140, 154, 161, 175, 220, 230, 250, 253, 275, 308, 322, 350, 385, 460, 500, 506, 529, 550, 575, 644, 700, 770, 805, 875, 1012, 1058, 1100, 1150, 1265, 1375, 1540, 1610, 1750, 1771, 1925, 2116, 2300, 2530, 2645, 2750, 2875, 3220, 3500, 3542, 3703, 3850, 4025, 5060, 5290, 5500, 5750, 5819, 6325, 7084, 7406, 7700, 8050, 8855, 9625, 10580, 11500, 11638, 12650, 13225, 14812, 16100, 17710, 18515, 19250, 20125, 23276, 25300, 26450, 29095, 31625, 35420, 37030, 38500, 40250, 40733, 44275, 52900, 58190, 63250, 66125, 74060, 80500, 81466, 88550, 92575, 116380, 126500, 132250, 145475, 162932, 177100, 185150, 203665, 221375, 264500, 290950, 370300, 407330, 442750, 462875, 581900, 727375, 814660, 885500, 925750, 1018325, 1454750, 1851500, 2036650, 2909500, 4073300, 5091625, 10183250, 20366500]

約数ペア:

[(1, 20366500), (2, 10183250), (4, 5091625), (5, 4073300), (7, 2909500), (10, 2036650), (11, 1851500), (14, 1454750), (20, 1018325), (22, 925750), (23, 885500), (25, 814660), (28, 727375), (35, 581900), (44, 462875), (46, 442750), (50, 407330), (55, 370300), (70, 290950), (77, 264500), (92, 221375), (100, 203665), (110, 185150), (115, 177100), (125, 162932), (140, 145475), (154, 132250), (161, 126500), (175, 116380), (220, 92575), (230, 88550), (250, 81466), (253, 80500), (275, 74060), (308, 66125), (322, 63250), (350, 58190), (385, 52900), (460, 44275), (500, 40733), (506, 40250), (529, 38500), (550, 37030), (575, 35420), (644, 31625), (700, 29095), (770, 26450), (805, 25300), (875, 23276), (1012, 20125), (1058, 19250), (1100, 18515), (1150, 17710), (1265, 16100), (1375, 14812), (1540, 13225), (1610, 12650), (1750, 11638), (1771, 11500), (1925, 10580), (2116, 9625), (2300, 8855), (2530, 8050), (2645, 7700), (2750, 7406), (2875, 7084), (3220, 6325), (3500, 5819), (3542, 5750), (3703, 5500), (3850, 5290), (4025, 5060)]