19819485

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{6991}}^1$

素因数の和:7015

約数の個数: 40

約数和(自身を含む): 40609536

約数和(自身を除く): 20790051

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 6991, 20973, 34955, 48937, 62919, 104865, 146811, 188757, 244685, 314595, 440433, 566271, 734055, 943785, 1321299, 2202165, 2831355, 3963897, 6606495, 19819485]

約数ペア:

[(1, 19819485), (3, 6606495), (5, 3963897), (7, 2831355), (9, 2202165), (15, 1321299), (21, 943785), (27, 734055), (35, 566271), (45, 440433), (63, 314595), (81, 244685), (105, 188757), (135, 146811), (189, 104865), (315, 62919), (405, 48937), (567, 34955), (945, 20973), (2835, 6991)]