20514795

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{4157}}^1$

素因数の和:4219

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 17805333

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 105, 141, 235, 329, 705, 987, 1645, 4157, 4935, 12471, 20785, 29099, 62355, 87297, 145495, 195379, 436485, 586137, 976895, 1367653, 2930685, 4102959, 6838265, 20514795]

約数ペア:

[(1, 20514795), (3, 6838265), (5, 4102959), (7, 2930685), (15, 1367653), (21, 976895), (35, 586137), (47, 436485), (105, 195379), (141, 145495), (235, 87297), (329, 62355), (705, 29099), (987, 20785), (1645, 12471), (4157, 4935)]