21668493

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{4937}}^1$

素因数の和:4977

約数の個数: 32

約数和(自身を含む): 37923840

約数和(自身を除く): 16255347

約数列:

[1, 3, 7, 11, 19, 21, 33, 57, 77, 133, 209, 231, 399, 627, 1463, 4389, 4937, 14811, 34559, 54307, 93803, 103677, 162921, 281409, 380149, 656621, 1031833, 1140447, 1969863, 3095499, 7222831, 21668493]

約数ペア:

[(1, 21668493), (3, 7222831), (7, 3095499), (11, 1969863), (19, 1140447), (21, 1031833), (33, 656621), (57, 380149), (77, 281409), (133, 162921), (209, 103677), (231, 93803), (399, 54307), (627, 34559), (1463, 14811), (4389, 4937)]