19680645

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{683}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 33685632

約数和(自身を除く): 14004987

約数列:

[1, 3, 5, 15, 17, 51, 85, 113, 255, 339, 565, 683, 1695, 1921, 2049, 3415, 5763, 9605, 10245, 11611, 28815, 34833, 58055, 77179, 174165, 231537, 385895, 1157685, 1312043, 3936129, 6560215, 19680645]

約数ペア:

[(1, 19680645), (3, 6560215), (5, 3936129), (15, 1312043), (17, 1157685), (51, 385895), (85, 231537), (113, 174165), (255, 77179), (339, 58055), (565, 34833), (683, 28815), (1695, 11611), (1921, 10245), (2049, 9605), (3415, 5763)]