21686588

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 49246176

約数和(自身を除く): 27559588

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 121, 148, 154, 173, 242, 259, 308, 346, 407, 484, 518, 692, 814, 847, 1036, 1211, 1628, 1694, 1903, 2422, 2849, 3388, 3806, 4477, 4844, 5698, 6401, 7612, 8954, 11396, 12802, 13321, 17908, 20933, 25604, 26642, 31339, 41866, 44807, 53284, 62678, 70411, 83732, 89614, 125356, 140822, 146531, 179228, 281644, 293062, 492877, 586124, 774521, 985754, 1549042, 1971508, 3098084, 5421647, 10843294, 21686588]

約数ペア:

[(1, 21686588), (2, 10843294), (4, 5421647), (7, 3098084), (11, 1971508), (14, 1549042), (22, 985754), (28, 774521), (37, 586124), (44, 492877), (74, 293062), (77, 281644), (121, 179228), (148, 146531), (154, 140822), (173, 125356), (242, 89614), (259, 83732), (308, 70411), (346, 62678), (407, 53284), (484, 44807), (518, 41866), (692, 31339), (814, 26642), (847, 25604), (1036, 20933), (1211, 17908), (1628, 13321), (1694, 12802), (1903, 11396), (2422, 8954), (2849, 7612), (3388, 6401), (3806, 5698), (4477, 4844)]