20815665

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{106747}}^1$

素因数の和:106768

約数の個数: 16

約数和(自身を含む): 35867328

約数和(自身を除く): 15051663

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 106747, 320241, 533735, 1387711, 1601205, 4163133, 6938555, 20815665]

約数ペア:

[(1, 20815665), (3, 6938555), (5, 4163133), (13, 1601205), (15, 1387711), (39, 533735), (65, 320241), (195, 106747)]