20809250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:105

約数の個数: 128

約数和(自身を含む): 51757056

約数和(自身を除く): 30947806

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 23, 25, 35, 46, 47, 50, 55, 70, 77, 94, 110, 115, 125, 154, 161, 175, 230, 235, 250, 253, 275, 322, 329, 350, 385, 470, 506, 517, 550, 575, 658, 770, 805, 875, 1034, 1081, 1150, 1175, 1265, 1375, 1610, 1645, 1750, 1771, 1925, 2162, 2350, 2530, 2585, 2750, 2875, 3290, 3542, 3619, 3850, 4025, 5170, 5405, 5750, 5875, 6325, 7238, 7567, 8050, 8225, 8855, 9625, 10810, 11750, 11891, 12650, 12925, 15134, 16450, 17710, 18095, 19250, 20125, 23782, 25850, 27025, 31625, 36190, 37835, 40250, 41125, 44275, 54050, 59455, 63250, 64625, 75670, 82250, 83237, 88550, 90475, 118910, 129250, 135125, 166474, 180950, 189175, 221375, 270250, 297275, 378350, 416185, 442750, 452375, 594550, 832370, 904750, 945875, 1486375, 1891750, 2080925, 2972750, 4161850, 10404625, 20809250]

約数ペア:

[(1, 20809250), (2, 10404625), (5, 4161850), (7, 2972750), (10, 2080925), (11, 1891750), (14, 1486375), (22, 945875), (23, 904750), (25, 832370), (35, 594550), (46, 452375), (47, 442750), (50, 416185), (55, 378350), (70, 297275), (77, 270250), (94, 221375), (110, 189175), (115, 180950), (125, 166474), (154, 135125), (161, 129250), (175, 118910), (230, 90475), (235, 88550), (250, 83237), (253, 82250), (275, 75670), (322, 64625), (329, 63250), (350, 59455), (385, 54050), (470, 44275), (506, 41125), (517, 40250), (550, 37835), (575, 36190), (658, 31625), (770, 27025), (805, 25850), (875, 23782), (1034, 20125), (1081, 19250), (1150, 18095), (1175, 17710), (1265, 16450), (1375, 15134), (1610, 12925), (1645, 12650), (1750, 11891), (1771, 11750), (1925, 10810), (2162, 9625), (2350, 8855), (2530, 8225), (2585, 8050), (2750, 7567), (2875, 7238), (3290, 6325), (3542, 5875), (3619, 5750), (3850, 5405), (4025, 5170)]