20390648

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{823}}^1$

素因数の和:1011

約数の個数: 32

約数和(自身を含む): 40540800

約数和(自身を除く): 20150152

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 163, 326, 652, 823, 1304, 1646, 3097, 3292, 6194, 6584, 12388, 15637, 24776, 31274, 62548, 125096, 134149, 268298, 536596, 1073192, 2548831, 5097662, 10195324, 20390648]

約数ペア:

[(1, 20390648), (2, 10195324), (4, 5097662), (8, 2548831), (19, 1073192), (38, 536596), (76, 268298), (152, 134149), (163, 125096), (326, 62548), (652, 31274), (823, 24776), (1304, 15637), (1646, 12388), (3097, 6584), (3292, 6194)]