21858415

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{919}}^1$

素因数の和:1062

約数の個数: 16

約数和(自身を含む): 27025920

約数和(自身を除く): 5167505

約数列:

[1, 5, 67, 71, 335, 355, 919, 4595, 4757, 23785, 61573, 65249, 307865, 326245, 4371683, 21858415]

約数ペア:

[(1, 21858415), (5, 4371683), (67, 326245), (71, 307865), (335, 65249), (355, 61573), (919, 23785), (4595, 4757)]