21879543

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{971}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 13579017

約数列:

[1, 3, 7, 21, 29, 37, 87, 111, 203, 259, 609, 777, 971, 1073, 2913, 3219, 6797, 7511, 20391, 22533, 28159, 35927, 84477, 107781, 197113, 251489, 591339, 754467, 1041883, 3125649, 7293181, 21879543]

約数ペア:

[(1, 21879543), (3, 7293181), (7, 3125649), (21, 1041883), (29, 754467), (37, 591339), (87, 251489), (111, 197113), (203, 107781), (259, 84477), (609, 35927), (777, 28159), (971, 22533), (1073, 20391), (2913, 7511), (3219, 6797)]