899997890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{479}}^1$

素因数の和:576

約数の個数: 128

約数和(自身を含む): 1990656000

約数和(自身を除く): 1090658110

約数列:

[1, 2, 5, 10, 11, 19, 22, 29, 31, 38, 55, 58, 62, 95, 110, 145, 155, 190, 209, 290, 310, 319, 341, 418, 479, 551, 589, 638, 682, 899, 958, 1045, 1102, 1178, 1595, 1705, 1798, 2090, 2395, 2755, 2945, 3190, 3410, 4495, 4790, 5269, 5510, 5890, 6061, 6479, 8990, 9101, 9889, 10538, 12122, 12958, 13891, 14849, 17081, 18202, 19778, 26345, 27782, 29698, 30305, 32395, 34162, 45505, 49445, 52690, 60610, 64790, 69455, 74245, 85405, 91010, 98890, 100111, 138910, 148490, 152801, 163339, 170810, 187891, 200222, 263929, 282131, 305602, 326678, 375782, 430621, 500555, 527858, 564262, 764005, 816695, 861242, 939455, 1001110, 1319645, 1410655, 1528010, 1633390, 1878910, 2153105, 2639290, 2821310, 2903219, 3103441, 4306210, 4736831, 5806438, 6206882, 8181799, 9473662, 14516095, 15517205, 16363598, 23684155, 29032190, 31034410, 40908995, 47368310, 81817990, 89999789, 179999578, 449998945, 899997890]

約数ペア:

[(1, 899997890), (2, 449998945), (5, 179999578), (10, 89999789), (11, 81817990), (19, 47368310), (22, 40908995), (29, 31034410), (31, 29032190), (38, 23684155), (55, 16363598), (58, 15517205), (62, 14516095), (95, 9473662), (110, 8181799), (145, 6206882), (155, 5806438), (190, 4736831), (209, 4306210), (290, 3103441), (310, 2903219), (319, 2821310), (341, 2639290), (418, 2153105), (479, 1878910), (551, 1633390), (589, 1528010), (638, 1410655), (682, 1319645), (899, 1001110), (958, 939455), (1045, 861242), (1102, 816695), (1178, 764005), (1595, 564262), (1705, 527858), (1798, 500555), (2090, 430621), (2395, 375782), (2755, 326678), (2945, 305602), (3190, 282131), (3410, 263929), (4495, 200222), (4790, 187891), (5269, 170810), (5510, 163339), (5890, 152801), (6061, 148490), (6479, 138910), (8990, 100111), (9101, 98890), (9889, 91010), (10538, 85405), (12122, 74245), (12958, 69455), (13891, 64790), (14849, 60610), (17081, 52690), (18202, 49445), (19778, 45505), (26345, 34162), (27782, 32395), (29698, 30305)]