20965644

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{307}}^1$

素因数の和:595

約数の個数: 72

約数和(自身を含む): 60988928

約数和(自身を除く): 40023284

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 271, 307, 542, 614, 813, 921, 1084, 1228, 1626, 1842, 1897, 2149, 2439, 2763, 3252, 3684, 3794, 4298, 4878, 5526, 5691, 6447, 7588, 8596, 9756, 11052, 11382, 12894, 17073, 19341, 22764, 25788, 34146, 38682, 68292, 77364, 83197, 166394, 249591, 332788, 499182, 582379, 748773, 998364, 1164758, 1497546, 1747137, 2329516, 2995092, 3494274, 5241411, 6988548, 10482822, 20965644]

約数ペア:

[(1, 20965644), (2, 10482822), (3, 6988548), (4, 5241411), (6, 3494274), (7, 2995092), (9, 2329516), (12, 1747137), (14, 1497546), (18, 1164758), (21, 998364), (28, 748773), (36, 582379), (42, 499182), (63, 332788), (84, 249591), (126, 166394), (252, 83197), (271, 77364), (307, 68292), (542, 38682), (614, 34146), (813, 25788), (921, 22764), (1084, 19341), (1228, 17073), (1626, 12894), (1842, 11382), (1897, 11052), (2149, 9756), (2439, 8596), (2763, 7588), (3252, 6447), (3684, 5691), (3794, 5526), (4298, 4878)]