20681055

素因数分解:

$3^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{499}}^1$

素因数の和:820

約数の個数: 32

約数和(自身を含む): 36960000

約数和(自身を除く): 16278945

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 307, 499, 921, 1497, 1535, 2495, 2763, 4491, 4605, 7485, 8289, 13473, 13815, 22455, 41445, 67365, 153193, 459579, 765965, 1378737, 2297895, 4136211, 6893685, 20681055]

約数ペア:

[(1, 20681055), (3, 6893685), (5, 4136211), (9, 2297895), (15, 1378737), (27, 765965), (45, 459579), (135, 153193), (307, 67365), (499, 41445), (921, 22455), (1497, 13815), (1535, 13473), (2495, 8289), (2763, 7485), (4491, 4605)]