21220113

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1\times {\mathrm{607}}^1$

素因数の和:924

約数の個数: 16

約数和(自身を含む): 29106176

約数和(自身を除く): 7886063

約数列:

[1, 3, 43, 129, 271, 607, 813, 1821, 11653, 26101, 34959, 78303, 164497, 493491, 7073371, 21220113]

約数ペア:

[(1, 21220113), (3, 7073371), (43, 493491), (129, 164497), (271, 78303), (607, 34959), (813, 26101), (1821, 11653)]