20172807

素因数分解:

$3^4\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1$

素因数の和:229

約数の個数: 40

約数和(自身を含む): 31781376

約数和(自身を除く): 11608569

約数列:

[1, 3, 9, 27, 37, 53, 81, 111, 127, 159, 333, 381, 477, 999, 1143, 1431, 1961, 2997, 3429, 4293, 4699, 5883, 6731, 10287, 14097, 17649, 20193, 42291, 52947, 60579, 126873, 158841, 181737, 249047, 380619, 545211, 747141, 2241423, 6724269, 20172807]

約数ペア:

[(1, 20172807), (3, 6724269), (9, 2241423), (27, 747141), (37, 545211), (53, 380619), (81, 249047), (111, 181737), (127, 158841), (159, 126873), (333, 60579), (381, 52947), (477, 42291), (999, 20193), (1143, 17649), (1431, 14097), (1961, 10287), (2997, 6731), (3429, 5883), (4293, 4699)]