21808941

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4969}}^1$

素因数の和:5009

約数の個数: 32

約数和(自身を含む): 38169600

約数和(自身を除く): 16360659

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4969, 14907, 34783, 54659, 94411, 104349, 163977, 283233, 382613, 660877, 1038521, 1147839, 1982631, 3115563, 7269647, 21808941]

約数ペア:

[(1, 21808941), (3, 7269647), (7, 3115563), (11, 1982631), (19, 1147839), (21, 1038521), (33, 660877), (57, 382613), (77, 283233), (133, 163977), (209, 104349), (231, 94411), (399, 54659), (627, 34783), (1463, 14907), (4389, 4969)]