19912563

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{1021}}^1$

素因数の和:1235

約数の個数: 24

約数和(自身を含む): 31567536

約数和(自身を除く): 11654973

約数列:

[1, 3, 9, 11, 33, 99, 197, 591, 1021, 1773, 2167, 3063, 6501, 9189, 11231, 19503, 33693, 101079, 201137, 603411, 1810233, 2212507, 6637521, 19912563]

約数ペア:

[(1, 19912563), (3, 6637521), (9, 2212507), (11, 1810233), (33, 603411), (99, 201137), (197, 101079), (591, 33693), (1021, 19503), (1773, 11231), (2167, 9189), (3063, 6501)]