21000388671

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{3919}}^1\times {\mathrm{8629}}^1$

素因数の和:12580

約数の個数: 32

約数和(自身を含む): 32476416000

約数和(自身を除く): 11476027329

約数列:

[1, 3, 9, 23, 27, 69, 207, 621, 3919, 8629, 11757, 25887, 35271, 77661, 90137, 105813, 198467, 232983, 270411, 595401, 811233, 1786203, 2433699, 5358609, 33817051, 101451153, 304353459, 777792173, 913060377, 2333376519, 7000129557, 21000388671]

約数ペア:

[(1, 21000388671), (3, 7000129557), (9, 2333376519), (23, 913060377), (27, 777792173), (69, 304353459), (207, 101451153), (621, 33817051), (3919, 5358609), (8629, 2433699), (11757, 1786203), (25887, 811233), (35271, 595401), (77661, 270411), (90137, 232983), (105813, 198467)]