21138513

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{10501}}^1$

素因数の和:10576

約数の個数: 16

約数和(自身を含む): 31253952

約数和(自身を除く): 10115439

約数列:

[1, 3, 11, 33, 61, 183, 671, 2013, 10501, 31503, 115511, 346533, 640561, 1921683, 7046171, 21138513]

約数ペア:

[(1, 21138513), (3, 7046171), (11, 1921683), (33, 640561), (61, 346533), (183, 115511), (671, 31503), (2013, 10501)]