28268857981

素因数分解:

$7^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{599}}^1$

素因数の和:819

約数の個数: 72

約数和(自身を含む): 36800568000

約数和(自身を除く): 8531710019

約数列:

[1, 7, 13, 41, 49, 91, 139, 169, 287, 533, 599, 637, 973, 1183, 1807, 2009, 3731, 4193, 5699, 6811, 6929, 7787, 8281, 12649, 23491, 24559, 26117, 29351, 39893, 48503, 54509, 74087, 83261, 88543, 101231, 164437, 171913, 279251, 319267, 339521, 381563, 518609, 582827, 708617, 963131, 1082393, 1151059, 1203391, 2234869, 3413701, 3630263, 4079789, 4150471, 4960319, 6741917, 7576751, 14071109, 15644083, 23895907, 29053297, 44378113, 47193419, 53037257, 98497763, 167271349, 203373079, 310646791, 576915469, 689484341, 2174527537, 4038408283, 28268857981]

約数ペア:

[(1, 28268857981), (7, 4038408283), (13, 2174527537), (41, 689484341), (49, 576915469), (91, 310646791), (139, 203373079), (169, 167271349), (287, 98497763), (533, 53037257), (599, 47193419), (637, 44378113), (973, 29053297), (1183, 23895907), (1807, 15644083), (2009, 14071109), (3731, 7576751), (4193, 6741917), (5699, 4960319), (6811, 4150471), (6929, 4079789), (7787, 3630263), (8281, 3413701), (12649, 2234869), (23491, 1203391), (24559, 1151059), (26117, 1082393), (29351, 963131), (39893, 708617), (48503, 582827), (54509, 518609), (74087, 381563), (83261, 339521), (88543, 319267), (101231, 279251), (164437, 171913)]