20008287

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 32960928

約数和(自身を除く): 12952641

約数列:

[1, 3, 9, 13, 39, 41, 43, 97, 117, 123, 129, 291, 369, 387, 533, 559, 873, 1261, 1599, 1677, 1763, 3783, 3977, 4171, 4797, 5031, 5289, 11349, 11931, 12513, 15867, 22919, 35793, 37539, 51701, 54223, 68757, 155103, 162669, 171011, 206271, 465309, 488007, 513033, 1539099, 2223143, 6669429, 20008287]

約数ペア:

[(1, 20008287), (3, 6669429), (9, 2223143), (13, 1539099), (39, 513033), (41, 488007), (43, 465309), (97, 206271), (117, 171011), (123, 162669), (129, 155103), (291, 68757), (369, 54223), (387, 51701), (533, 37539), (559, 35793), (873, 22919), (1261, 15867), (1599, 12513), (1677, 11931), (1763, 11349), (3783, 5289), (3977, 5031), (4171, 4797)]