21151431

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{5011}}^1$

素因数の和:5091

約数の個数: 24

約数和(自身を含む): 35444864

約数和(自身を除く): 14293433

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 5011, 15033, 35077, 45099, 105231, 315693, 335737, 1007211, 2350159, 3021633, 7050477, 21151431]

約数ペア:

[(1, 21151431), (3, 7050477), (7, 3021633), (9, 2350159), (21, 1007211), (63, 335737), (67, 315693), (201, 105231), (469, 45099), (603, 35077), (1407, 15033), (4221, 5011)]