20644965

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{233}}^1$

素因数の和:434

約数の個数: 48

約数和(自身を含む): 39424320

約数和(自身を除く): 18779355

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 179, 233, 495, 537, 699, 895, 1165, 1611, 1969, 2097, 2563, 2685, 3495, 5907, 7689, 8055, 9845, 10485, 12815, 17721, 23067, 29535, 38445, 41707, 88605, 115335, 125121, 208535, 375363, 458777, 625605, 1376331, 1876815, 2293885, 4128993, 6881655, 20644965]

約数ペア:

[(1, 20644965), (3, 6881655), (5, 4128993), (9, 2293885), (11, 1876815), (15, 1376331), (33, 625605), (45, 458777), (55, 375363), (99, 208535), (165, 125121), (179, 115335), (233, 88605), (495, 41707), (537, 38445), (699, 29535), (895, 23067), (1165, 17721), (1611, 12815), (1969, 10485), (2097, 9845), (2563, 8055), (2685, 7689), (3495, 5907)]