171621981

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{419}}^1\times {\mathrm{641}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 252383040

約数和(自身を除く): 80761059

約数列:

[1, 3, 9, 71, 213, 419, 639, 641, 1257, 1923, 3771, 5769, 29749, 45511, 89247, 136533, 267741, 268579, 409599, 805737, 2417211, 19069109, 57207327, 171621981]

約数ペア:

[(1, 171621981), (3, 57207327), (9, 19069109), (71, 2417211), (213, 805737), (419, 409599), (639, 268579), (641, 267741), (1257, 136533), (1923, 89247), (3771, 45511), (5769, 29749)]