21000503480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{191}}^1\times {\mathrm{22717}}^1$

素因数の和:22941

約数の個数: 96

約数和(自身を含む): 52211416320

約数和(自身を除く): 31210912840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 191, 220, 242, 382, 440, 484, 605, 764, 955, 968, 1210, 1528, 1910, 2101, 2420, 3820, 4202, 4840, 7640, 8404, 10505, 16808, 21010, 22717, 23111, 42020, 45434, 46222, 84040, 90868, 92444, 113585, 115555, 181736, 184888, 227170, 231110, 249887, 454340, 462220, 499774, 908680, 924440, 999548, 1249435, 1999096, 2498870, 2748757, 4338947, 4997740, 5497514, 8677894, 9995480, 10995028, 13743785, 17355788, 21694735, 21990056, 27487570, 34711576, 43389470, 47728417, 54975140, 86778940, 95456834, 109950280, 173557880, 190913668, 238642085, 381827336, 477284170, 525012587, 954568340, 1050025174, 1909136680, 2100050348, 2625062935, 4200100696, 5250125870, 10500251740, 21000503480]

約数ペア:

[(1, 21000503480), (2, 10500251740), (4, 5250125870), (5, 4200100696), (8, 2625062935), (10, 2100050348), (11, 1909136680), (20, 1050025174), (22, 954568340), (40, 525012587), (44, 477284170), (55, 381827336), (88, 238642085), (110, 190913668), (121, 173557880), (191, 109950280), (220, 95456834), (242, 86778940), (382, 54975140), (440, 47728417), (484, 43389470), (605, 34711576), (764, 27487570), (955, 21990056), (968, 21694735), (1210, 17355788), (1528, 13743785), (1910, 10995028), (2101, 9995480), (2420, 8677894), (3820, 5497514), (4202, 4997740), (4840, 4338947), (7640, 2748757), (8404, 2498870), (10505, 1999096), (16808, 1249435), (21010, 999548), (22717, 924440), (23111, 908680), (42020, 499774), (45434, 462220), (46222, 454340), (84040, 249887), (90868, 231110), (92444, 227170), (113585, 184888), (115555, 181736)]