21009894

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 43027200

約数和(自身を除く): 22017306

約数列:

[1, 2, 3, 6, 71, 142, 149, 213, 298, 331, 426, 447, 662, 894, 993, 1986, 10579, 21158, 23501, 31737, 47002, 49319, 63474, 70503, 98638, 141006, 147957, 295914, 3501649, 7003298, 10504947, 21009894]

約数ペア:

[(1, 21009894), (2, 10504947), (3, 7003298), (6, 3501649), (71, 295914), (142, 147957), (149, 141006), (213, 98638), (298, 70503), (331, 63474), (426, 49319), (447, 47002), (662, 31737), (894, 23501), (993, 21158), (1986, 10579)]