20972325

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{2311}}^1$

素因数の和:2346

約数の個数: 36

約数和(自身を含む): 38129504

約数和(自身を除く): 17157179

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 165, 275, 363, 605, 825, 1815, 2311, 3025, 6933, 9075, 11555, 25421, 34665, 57775, 76263, 127105, 173325, 279631, 381315, 635525, 838893, 1398155, 1906575, 4194465, 6990775, 20972325]

約数ペア:

[(1, 20972325), (3, 6990775), (5, 4194465), (11, 1906575), (15, 1398155), (25, 838893), (33, 635525), (55, 381315), (75, 279631), (121, 173325), (165, 127105), (275, 76263), (363, 57775), (605, 34665), (825, 25421), (1815, 11555), (2311, 9075), (3025, 6933)]