21315225

素因数分解:

$3^1\times 5^2\times {\mathrm{59}}^1\times {\mathrm{4817}}^1$

素因数の和:4889

約数の個数: 24

約数和(自身を含む): 35845920

約数和(自身を除く): 14530695

約数列:

[1, 3, 5, 15, 25, 59, 75, 177, 295, 885, 1475, 4425, 4817, 14451, 24085, 72255, 120425, 284203, 361275, 852609, 1421015, 4263045, 7105075, 21315225]

約数ペア:

[(1, 21315225), (3, 7105075), (5, 4263045), (15, 1421015), (25, 852609), (59, 361275), (75, 284203), (177, 120425), (295, 72255), (885, 24085), (1475, 14451), (4425, 4817)]