20478285

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{8923}}^1$

素因数の和:8954

約数の個数: 32

約数和(自身を含む): 38551680

約数和(自身を除く): 18073395

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 8923, 26769, 44615, 80307, 133845, 151691, 240921, 401535, 455073, 758455, 1204605, 1365219, 2275365, 4095657, 6826095, 20478285]

約数ペア:

[(1, 20478285), (3, 6826095), (5, 4095657), (9, 2275365), (15, 1365219), (17, 1204605), (27, 758455), (45, 455073), (51, 401535), (85, 240921), (135, 151691), (153, 133845), (255, 80307), (459, 44615), (765, 26769), (2295, 8923)]