20211849

素因数分解:

$3^4\times 7^1\times {\mathrm{43}}^1\times {\mathrm{829}}^1$

素因数の和:891

約数の個数: 40

約数和(自身を含む): 35351360

約数和(自身を除く): 15139511

約数列:

[1, 3, 7, 9, 21, 27, 43, 63, 81, 129, 189, 301, 387, 567, 829, 903, 1161, 2487, 2709, 3483, 5803, 7461, 8127, 17409, 22383, 24381, 35647, 52227, 67149, 106941, 156681, 249529, 320823, 470043, 748587, 962469, 2245761, 2887407, 6737283, 20211849]

約数ペア:

[(1, 20211849), (3, 6737283), (7, 2887407), (9, 2245761), (21, 962469), (27, 748587), (43, 470043), (63, 320823), (81, 249529), (129, 156681), (189, 106941), (301, 67149), (387, 52227), (567, 35647), (829, 24381), (903, 22383), (1161, 17409), (2487, 8127), (2709, 7461), (3483, 5803)]