21493480

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{4231}}^1$

素因数の和:4369

約数の個数: 32

約数和(自身を含む): 48752640

約数和(自身を除く): 27259160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 4231, 5080, 8462, 16924, 21155, 33848, 42310, 84620, 169240, 537337, 1074674, 2149348, 2686685, 4298696, 5373370, 10746740, 21493480]

約数ペア:

[(1, 21493480), (2, 10746740), (4, 5373370), (5, 4298696), (8, 2686685), (10, 2149348), (20, 1074674), (40, 537337), (127, 169240), (254, 84620), (508, 42310), (635, 33848), (1016, 21155), (1270, 16924), (2540, 8462), (4231, 5080)]