21211563

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{5011}}^1$

素因数の和:5114

約数の個数: 16

約数和(自身を含む): 30312576

約数和(自身を除く): 9101013

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 5011, 15033, 85187, 255561, 415913, 1247739, 7070521, 21211563]

約数ペア:

[(1, 21211563), (3, 7070521), (17, 1247739), (51, 415913), (83, 255561), (249, 85187), (1411, 15033), (4233, 5011)]