21200373

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8443}}^1$

素因数の和:8486

約数の個数: 20

約数和(自身を含む): 32695168

約数和(自身を除く): 11494795

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8443, 25329, 75987, 227961, 261733, 683883, 785199, 2355597, 7066791, 21200373]

約数ペア:

[(1, 21200373), (3, 7066791), (9, 2355597), (27, 785199), (31, 683883), (81, 261733), (93, 227961), (279, 75987), (837, 25329), (2511, 8443)]