21508443

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{521}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 35078400

約数和(自身を除く): 13569957

約数列:

[1, 3, 9, 11, 27, 33, 99, 139, 297, 417, 521, 1251, 1529, 1563, 3753, 4587, 4689, 5731, 13761, 14067, 17193, 41283, 51579, 72419, 154737, 217257, 651771, 796609, 1955313, 2389827, 7169481, 21508443]

約数ペア:

[(1, 21508443), (3, 7169481), (9, 2389827), (11, 1955313), (27, 796609), (33, 651771), (99, 217257), (139, 154737), (297, 72419), (417, 51579), (521, 41283), (1251, 17193), (1529, 14067), (1563, 13761), (3753, 5731), (4587, 4689)]