20838420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{115769}}^1$

素因数の和:115784

約数の個数: 36

約数和(自身を含む): 63210420

約数和(自身を除く): 42372000

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 115769, 231538, 347307, 463076, 578845, 694614, 1041921, 1157690, 1389228, 1736535, 2083842, 2315380, 3473070, 4167684, 5209605, 6946140, 10419210, 20838420]

約数ペア:

[(1, 20838420), (2, 10419210), (3, 6946140), (4, 5209605), (5, 4167684), (6, 3473070), (9, 2315380), (10, 2083842), (12, 1736535), (15, 1389228), (18, 1157690), (20, 1041921), (30, 694614), (36, 578845), (45, 463076), (60, 347307), (90, 231538), (180, 115769)]