21193227

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{593}}^1$

素因数の和:648

約数の個数: 36

約数和(自身を含む): 35304984

約数和(自身を除く): 14111757

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 361, 593, 627, 1083, 1779, 1881, 3249, 3971, 5337, 6523, 11267, 11913, 19569, 33801, 35739, 58707, 101403, 123937, 214073, 371811, 642219, 1115433, 1926657, 2354803, 7064409, 21193227]

約数ペア:

[(1, 21193227), (3, 7064409), (9, 2354803), (11, 1926657), (19, 1115433), (33, 642219), (57, 371811), (99, 214073), (171, 123937), (209, 101403), (361, 58707), (593, 35739), (627, 33801), (1083, 19569), (1779, 11913), (1881, 11267), (3249, 6523), (3971, 5337)]