21046297155

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{990181}}^1$

素因数の和:990311

約数の個数: 32

約数和(自身を含む): 36597126720

約数和(自身を除く): 15550829565

約数列:

[1, 3, 5, 13, 15, 39, 65, 109, 195, 327, 545, 1417, 1635, 4251, 7085, 21255, 990181, 2970543, 4950905, 12872353, 14852715, 38617059, 64361765, 107929729, 193085295, 323789187, 539648645, 1403086477, 1618945935, 4209259431, 7015432385, 21046297155]

約数ペア:

[(1, 21046297155), (3, 7015432385), (5, 4209259431), (13, 1618945935), (15, 1403086477), (39, 539648645), (65, 323789187), (109, 193085295), (195, 107929729), (327, 64361765), (545, 38617059), (1417, 14852715), (1635, 12872353), (4251, 4950905), (7085, 2970543), (21255, 990181)]