21540309

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{60337}}^1$

素因数の和:60364

約数の個数: 16

約数和(自身を含む): 34754688

約数和(自身を除く): 13214379

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 60337, 181011, 422359, 1025729, 1267077, 3077187, 7180103, 21540309]

約数ペア:

[(1, 21540309), (3, 7180103), (7, 3077187), (17, 1267077), (21, 1025729), (51, 422359), (119, 181011), (357, 60337)]