21475728

素因数分解:

$2^4\times 3^2\times {\mathrm{293}}^1\times {\mathrm{509}}^1$

素因数の和:816

約数の個数: 60

約数和(自身を含む): 60425820

約数和(自身を除く): 38950092

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 293, 509, 586, 879, 1018, 1172, 1527, 1758, 2036, 2344, 2637, 3054, 3516, 4072, 4581, 4688, 5274, 6108, 7032, 8144, 9162, 10548, 12216, 14064, 18324, 21096, 24432, 36648, 42192, 73296, 149137, 298274, 447411, 596548, 894822, 1193096, 1342233, 1789644, 2386192, 2684466, 3579288, 5368932, 7158576, 10737864, 21475728]

約数ペア:

[(1, 21475728), (2, 10737864), (3, 7158576), (4, 5368932), (6, 3579288), (8, 2684466), (9, 2386192), (12, 1789644), (16, 1342233), (18, 1193096), (24, 894822), (36, 596548), (48, 447411), (72, 298274), (144, 149137), (293, 73296), (509, 42192), (586, 36648), (879, 24432), (1018, 21096), (1172, 18324), (1527, 14064), (1758, 12216), (2036, 10548), (2344, 9162), (2637, 8144), (3054, 7032), (3516, 6108), (4072, 5274), (4581, 4688)]