20153385

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{467}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 40300416

約数和(自身を除く): 20147031

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 137, 315, 411, 467, 685, 959, 1233, 1401, 2055, 2335, 2877, 3269, 4203, 4795, 6165, 7005, 8631, 9807, 14385, 16345, 21015, 29421, 43155, 49035, 63979, 147105, 191937, 319895, 447853, 575811, 959685, 1343559, 2239265, 2879055, 4030677, 6717795, 20153385]

約数ペア:

[(1, 20153385), (3, 6717795), (5, 4030677), (7, 2879055), (9, 2239265), (15, 1343559), (21, 959685), (35, 575811), (45, 447853), (63, 319895), (105, 191937), (137, 147105), (315, 63979), (411, 49035), (467, 43155), (685, 29421), (959, 21015), (1233, 16345), (1401, 14385), (2055, 9807), (2335, 8631), (2877, 7005), (3269, 6165), (4203, 4795)]