21877656

素因数分解:

$2^3\times 3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 57127680

約数和(自身を除く): 35250024

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 37, 71, 74, 111, 142, 148, 213, 222, 284, 296, 347, 426, 444, 568, 694, 852, 888, 1041, 1388, 1704, 2082, 2627, 2776, 4164, 5254, 7881, 8328, 10508, 12839, 15762, 21016, 24637, 25678, 31524, 38517, 49274, 51356, 63048, 73911, 77034, 98548, 102712, 147822, 154068, 197096, 295644, 308136, 591288, 911569, 1823138, 2734707, 3646276, 5469414, 7292552, 10938828, 21877656]

約数ペア:

[(1, 21877656), (2, 10938828), (3, 7292552), (4, 5469414), (6, 3646276), (8, 2734707), (12, 1823138), (24, 911569), (37, 591288), (71, 308136), (74, 295644), (111, 197096), (142, 154068), (148, 147822), (213, 102712), (222, 98548), (284, 77034), (296, 73911), (347, 63048), (426, 51356), (444, 49274), (568, 38517), (694, 31524), (852, 25678), (888, 24637), (1041, 21016), (1388, 15762), (1704, 12839), (2082, 10508), (2627, 8328), (2776, 7881), (4164, 5254)]