21215085

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61493}}^1$

素因数の和:61524

約数の個数: 16

約数和(自身を含む): 35420544

約数和(自身を除く): 14205459

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61493, 184479, 307465, 922395, 1414339, 4243017, 7071695, 21215085]

約数ペア:

[(1, 21215085), (3, 7071695), (5, 4243017), (15, 1414339), (23, 922395), (69, 307465), (115, 184479), (345, 61493)]