216406785

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{294431}}^1$

素因数の和:294453

約数の個数: 24

約数和(自身を含む): 402782976

約数和(自身を除く): 186376191

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735, 294431, 883293, 1472155, 2061017, 4416465, 6183051, 10305085, 14427119, 30915255, 43281357, 72135595, 216406785]

約数ペア:

[(1, 216406785), (3, 72135595), (5, 43281357), (7, 30915255), (15, 14427119), (21, 10305085), (35, 6183051), (49, 4416465), (105, 2061017), (147, 1472155), (245, 883293), (735, 294431)]