21211485

素因数分解:

$3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{9007}}^1$

素因数の和:9172

約数の個数: 16

約数和(自身を含む): 34158336

約数和(自身を除く): 12946851

約数列:

[1, 3, 5, 15, 157, 471, 785, 2355, 9007, 27021, 45035, 135105, 1414099, 4242297, 7070495, 21211485]

約数ペア:

[(1, 21211485), (3, 7070495), (5, 4242297), (15, 1414099), (157, 135105), (471, 45035), (785, 27021), (2355, 9007)]