20740185

素因数分解:

$3^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{2293}}^1$

素因数の和:2374

約数の個数: 32

約数和(自身を含む): 37438080

約数和(自身を除く): 16697895

約数列:

[1, 3, 5, 9, 15, 27, 45, 67, 135, 201, 335, 603, 1005, 1809, 2293, 3015, 6879, 9045, 11465, 20637, 34395, 61911, 103185, 153631, 309555, 460893, 768155, 1382679, 2304465, 4148037, 6913395, 20740185]

約数ペア:

[(1, 20740185), (3, 6913395), (5, 4148037), (9, 2304465), (15, 1382679), (27, 768155), (45, 460893), (67, 309555), (135, 153631), (201, 103185), (335, 61911), (603, 34395), (1005, 20637), (1809, 11465), (2293, 9045), (3015, 6879)]