20181444985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2111}}^1\times {\mathrm{7741}}^1$

素因数の和:9889

約数の個数: 32

約数和(自身を含む): 27469854720

約数和(自身を除く): 7288409735

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 2111, 7741, 10555, 27443, 38705, 40109, 100633, 137215, 147079, 200545, 503165, 521417, 735395, 1912027, 2607085, 9560135, 16341251, 81706255, 212436263, 310483769, 1062181315, 1552418845, 4036288997, 20181444985]

約数ペア:

[(1, 20181444985), (5, 4036288997), (13, 1552418845), (19, 1062181315), (65, 310483769), (95, 212436263), (247, 81706255), (1235, 16341251), (2111, 9560135), (7741, 2607085), (10555, 1912027), (27443, 735395), (38705, 521417), (40109, 503165), (100633, 200545), (137215, 147079)]