20751945

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{823}}^1$

素因数の和:913

約数の個数: 24

約数和(自身を含む): 34074048

約数和(自身を除く): 13322103

約数列:

[1, 3, 5, 15, 41, 123, 205, 615, 823, 1681, 2469, 4115, 5043, 8405, 12345, 25215, 33743, 101229, 168715, 506145, 1383463, 4150389, 6917315, 20751945]

約数ペア:

[(1, 20751945), (3, 6917315), (5, 4150389), (15, 1383463), (41, 506145), (123, 168715), (205, 101229), (615, 33743), (823, 25215), (1681, 12345), (2469, 8405), (4115, 5043)]