21320457235

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1786381}}^1$

素因数の和:1786435

約数の個数: 32

約数和(自身を含む): 32926593024

約数和(自身を除く): 11606135789

約数列:

[1, 5, 7, 11, 31, 35, 55, 77, 155, 217, 341, 385, 1085, 1705, 2387, 11935, 1786381, 8931905, 12504667, 19650191, 55377811, 62523335, 98250955, 137551337, 276889055, 387644677, 609155921, 687756685, 1938223385, 3045779605, 4264091447, 21320457235]

約数ペア:

[(1, 21320457235), (5, 4264091447), (7, 3045779605), (11, 1938223385), (31, 687756685), (35, 609155921), (55, 387644677), (77, 276889055), (155, 137551337), (217, 98250955), (341, 62523335), (385, 55377811), (1085, 19650191), (1705, 12504667), (2387, 8931905), (11935, 1786381)]