21480504

素因数分解:

$2^3\times 3^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:332

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 34161096

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 47, 94, 137, 139, 141, 188, 274, 278, 282, 376, 411, 417, 548, 556, 564, 822, 834, 1096, 1112, 1128, 1644, 1668, 3288, 3336, 6439, 6533, 12878, 13066, 19043, 19317, 19599, 25756, 26132, 38086, 38634, 39198, 51512, 52264, 57129, 76172, 77268, 78396, 114258, 152344, 154536, 156792, 228516, 457032, 895021, 1790042, 2685063, 3580084, 5370126, 7160168, 10740252, 21480504]

約数ペア:

[(1, 21480504), (2, 10740252), (3, 7160168), (4, 5370126), (6, 3580084), (8, 2685063), (12, 1790042), (24, 895021), (47, 457032), (94, 228516), (137, 156792), (139, 154536), (141, 152344), (188, 114258), (274, 78396), (278, 77268), (282, 76172), (376, 57129), (411, 52264), (417, 51512), (548, 39198), (556, 38634), (564, 38086), (822, 26132), (834, 25756), (1096, 19599), (1112, 19317), (1128, 19043), (1644, 13066), (1668, 12878), (3288, 6533), (3336, 6439)]