2171961

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1$

素因数の和:194

約数の個数: 32

約数和(自身を含む): 3594240

約数和(自身を除く): 1422279

約数列:

[1, 3, 9, 11, 27, 33, 71, 99, 103, 213, 297, 309, 639, 781, 927, 1133, 1917, 2343, 2781, 3399, 7029, 7313, 10197, 21087, 21939, 30591, 65817, 80443, 197451, 241329, 723987, 2171961]

約数ペア:

[(1, 2171961), (3, 723987), (9, 241329), (11, 197451), (27, 80443), (33, 65817), (71, 30591), (99, 21939), (103, 21087), (213, 10197), (297, 7313), (309, 7029), (639, 3399), (781, 2781), (927, 2343), (1133, 1917)]