20647605

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{433}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 38372544

約数和(自身を除く): 17724939

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 165, 187, 255, 289, 433, 561, 867, 935, 1299, 1445, 2165, 2805, 3179, 4335, 4763, 6495, 7361, 9537, 14289, 15895, 22083, 23815, 36805, 47685, 71445, 80971, 110415, 125137, 242913, 375411, 404855, 625685, 1214565, 1376507, 1877055, 4129521, 6882535, 20647605]

約数ペア:

[(1, 20647605), (3, 6882535), (5, 4129521), (11, 1877055), (15, 1376507), (17, 1214565), (33, 625685), (51, 404855), (55, 375411), (85, 242913), (165, 125137), (187, 110415), (255, 80971), (289, 71445), (433, 47685), (561, 36805), (867, 23815), (935, 22083), (1299, 15895), (1445, 14289), (2165, 9537), (2805, 7361), (3179, 6495), (4335, 4763)]