20791485

素因数分解:

$3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1$

素因数の和:400

約数の個数: 80

約数和(自身を含む): 43908480

約数和(自身を除く): 23116995

約数列:

[1, 3, 5, 9, 11, 13, 15, 27, 33, 39, 45, 55, 65, 81, 99, 117, 135, 143, 165, 195, 297, 351, 359, 405, 429, 495, 585, 715, 891, 1053, 1077, 1287, 1485, 1755, 1795, 2145, 3231, 3861, 3949, 4455, 4667, 5265, 5385, 6435, 9693, 11583, 11847, 14001, 16155, 19305, 19745, 23335, 29079, 35541, 42003, 48465, 51337, 57915, 59235, 70005, 106623, 126009, 145395, 154011, 177705, 210015, 256685, 319869, 378027, 462033, 533115, 630045, 770055, 1386099, 1599345, 1890135, 2310165, 4158297, 6930495, 20791485]

約数ペア:

[(1, 20791485), (3, 6930495), (5, 4158297), (9, 2310165), (11, 1890135), (13, 1599345), (15, 1386099), (27, 770055), (33, 630045), (39, 533115), (45, 462033), (55, 378027), (65, 319869), (81, 256685), (99, 210015), (117, 177705), (135, 154011), (143, 145395), (165, 126009), (195, 106623), (297, 70005), (351, 59235), (359, 57915), (405, 51337), (429, 48465), (495, 42003), (585, 35541), (715, 29079), (891, 23335), (1053, 19745), (1077, 19305), (1287, 16155), (1485, 14001), (1755, 11847), (1795, 11583), (2145, 9693), (3231, 6435), (3861, 5385), (3949, 5265), (4455, 4667)]