20541465

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21737}}^1$

素因数の和:21758

約数の個数: 32

約数和(自身を含む): 41736960

約数和(自身を除く): 21195495

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21737, 65211, 108685, 152159, 195633, 326055, 456477, 586899, 760795, 978165, 1369431, 2282385, 2934495, 4108293, 6847155, 20541465]

約数ペア:

[(1, 20541465), (3, 6847155), (5, 4108293), (7, 2934495), (9, 2282385), (15, 1369431), (21, 978165), (27, 760795), (35, 586899), (45, 456477), (63, 326055), (105, 195633), (135, 152159), (189, 108685), (315, 65211), (945, 21737)]