21149409

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{3203}}^1$

素因数の和:3308

約数の個数: 16

約数和(自身を含む): 29528064

約数和(自身を除く): 8378655

約数列:

[1, 3, 31, 71, 93, 213, 2201, 3203, 6603, 9609, 99293, 227413, 297879, 682239, 7049803, 21149409]

約数ペア:

[(1, 21149409), (3, 7049803), (31, 682239), (71, 297879), (93, 227413), (213, 99293), (2201, 9609), (3203, 6603)]