21537285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{643}}^1$

素因数の和:698

約数の個数: 64

約数和(自身を含む): 44513280

約数和(自身を除く): 22975995

約数列:

[1, 3, 5, 7, 11, 15, 21, 29, 33, 35, 55, 77, 87, 105, 145, 165, 203, 231, 319, 385, 435, 609, 643, 957, 1015, 1155, 1595, 1929, 2233, 3045, 3215, 4501, 4785, 6699, 7073, 9645, 11165, 13503, 18647, 21219, 22505, 33495, 35365, 49511, 55941, 67515, 93235, 106095, 130529, 148533, 205117, 247555, 279705, 391587, 615351, 652645, 742665, 1025585, 1435819, 1957935, 3076755, 4307457, 7179095, 21537285]

約数ペア:

[(1, 21537285), (3, 7179095), (5, 4307457), (7, 3076755), (11, 1957935), (15, 1435819), (21, 1025585), (29, 742665), (33, 652645), (35, 615351), (55, 391587), (77, 279705), (87, 247555), (105, 205117), (145, 148533), (165, 130529), (203, 106095), (231, 93235), (319, 67515), (385, 55941), (435, 49511), (609, 35365), (643, 33495), (957, 22505), (1015, 21219), (1155, 18647), (1595, 13503), (1929, 11165), (2233, 9645), (3045, 7073), (3215, 6699), (4501, 4785)]