20997456

素因数分解:

$2^4\times 3^1\times {\mathrm{151}}^1\times {\mathrm{2897}}^1$

素因数の和:3059

約数の個数: 40

約数和(自身を含む): 54621504

約数和(自身を除く): 33624048

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 151, 302, 453, 604, 906, 1208, 1812, 2416, 2897, 3624, 5794, 7248, 8691, 11588, 17382, 23176, 34764, 46352, 69528, 139056, 437447, 874894, 1312341, 1749788, 2624682, 3499576, 5249364, 6999152, 10498728, 20997456]

約数ペア:

[(1, 20997456), (2, 10498728), (3, 6999152), (4, 5249364), (6, 3499576), (8, 2624682), (12, 1749788), (16, 1312341), (24, 874894), (48, 437447), (151, 139056), (302, 69528), (453, 46352), (604, 34764), (906, 23176), (1208, 17382), (1812, 11588), (2416, 8691), (2897, 7248), (3624, 5794)]