20172595317

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{256639}}^1$

素因数の和:256865

約数の個数: 32

約数和(自身を含む): 32521420800

約数和(自身を除く): 12348825483

約数列:

[1, 3, 7, 19, 21, 57, 133, 197, 399, 591, 1379, 3743, 4137, 11229, 26201, 78603, 256639, 769917, 1796473, 4876141, 5389419, 14628423, 34132987, 50557883, 102398961, 151673649, 353905181, 960599777, 1061715543, 2881799331, 6724198439, 20172595317]

約数ペア:

[(1, 20172595317), (3, 6724198439), (7, 2881799331), (19, 1061715543), (21, 960599777), (57, 353905181), (133, 151673649), (197, 102398961), (399, 50557883), (591, 34132987), (1379, 14628423), (3743, 5389419), (4137, 4876141), (11229, 1796473), (26201, 769917), (78603, 256639)]