21161325

素因数分解:

$3^1\times 5^2\times {\mathrm{283}}^1\times {\mathrm{997}}^1$

素因数の和:1293

約数の個数: 24

約数和(自身を含む): 35145568

約数和(自身を除く): 13984243

約数列:

[1, 3, 5, 15, 25, 75, 283, 849, 997, 1415, 2991, 4245, 4985, 7075, 14955, 21225, 24925, 74775, 282151, 846453, 1410755, 4232265, 7053775, 21161325]

約数ペア:

[(1, 21161325), (3, 7053775), (5, 4232265), (15, 1410755), (25, 846453), (75, 282151), (283, 74775), (849, 24925), (997, 21225), (1415, 14955), (2991, 7075), (4245, 4985)]