21186501

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1831}}^1$

素因数の和:1889

約数の個数: 32

約数和(自身を含む): 35174400

約数和(自身を除く): 13987899

約数列:

[1, 3, 7, 19, 21, 29, 57, 87, 133, 203, 399, 551, 609, 1653, 1831, 3857, 5493, 11571, 12817, 34789, 38451, 53099, 104367, 159297, 243523, 371693, 730569, 1008881, 1115079, 3026643, 7062167, 21186501]

約数ペア:

[(1, 21186501), (3, 7062167), (7, 3026643), (19, 1115079), (21, 1008881), (29, 730569), (57, 371693), (87, 243523), (133, 159297), (203, 104367), (399, 53099), (551, 38451), (609, 34789), (1653, 12817), (1831, 11571), (3857, 5493)]