20216664848

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{478433}}^1$

素因数の和:478599

約数の個数: 40

約数和(自身を含む): 41528071200

約数和(自身を除く): 21311406352

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 139, 152, 278, 304, 556, 1112, 2224, 2641, 5282, 10564, 21128, 42256, 478433, 956866, 1913732, 3827464, 7654928, 9090227, 18180454, 36360908, 66502187, 72721816, 133004374, 145443632, 266008748, 532017496, 1064034992, 1263541553, 2527083106, 5054166212, 10108332424, 20216664848]

約数ペア:

[(1, 20216664848), (2, 10108332424), (4, 5054166212), (8, 2527083106), (16, 1263541553), (19, 1064034992), (38, 532017496), (76, 266008748), (139, 145443632), (152, 133004374), (278, 72721816), (304, 66502187), (556, 36360908), (1112, 18180454), (2224, 9090227), (2641, 7654928), (5282, 3827464), (10564, 1913732), (21128, 956866), (42256, 478433)]