21209547

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{1753}}^1$

素因数の和:1902

約数の個数: 16

約数和(自身を含む): 29326880

約数和(自身を除く): 8117333

約数列:

[1, 3, 37, 109, 111, 327, 1753, 4033, 5259, 12099, 64861, 191077, 194583, 573231, 7069849, 21209547]

約数ペア:

[(1, 21209547), (3, 7069849), (37, 573231), (109, 194583), (111, 191077), (327, 64861), (1753, 12099), (4033, 5259)]