21044320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{1087}}^1$

素因数の和:1124

約数の個数: 72

約数和(自身を含む): 54698112

約数和(自身を除く): 33653792

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1087, 1210, 1760, 1936, 2174, 2420, 3872, 4348, 4840, 5435, 8696, 9680, 10870, 11957, 17392, 19360, 21740, 23914, 34784, 43480, 47828, 59785, 86960, 95656, 119570, 131527, 173920, 191312, 239140, 263054, 382624, 478280, 526108, 657635, 956560, 1052216, 1315270, 1913120, 2104432, 2630540, 4208864, 5261080, 10522160, 21044320]

約数ペア:

[(1, 21044320), (2, 10522160), (4, 5261080), (5, 4208864), (8, 2630540), (10, 2104432), (11, 1913120), (16, 1315270), (20, 1052216), (22, 956560), (32, 657635), (40, 526108), (44, 478280), (55, 382624), (80, 263054), (88, 239140), (110, 191312), (121, 173920), (160, 131527), (176, 119570), (220, 95656), (242, 86960), (352, 59785), (440, 47828), (484, 43480), (605, 34784), (880, 23914), (968, 21740), (1087, 19360), (1210, 17392), (1760, 11957), (1936, 10870), (2174, 9680), (2420, 8696), (3872, 5435), (4348, 4840)]