20940141

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:261

約数の個数: 32

約数和(自身を含む): 30855168

約数和(自身を除く): 9915027

約数列:

[1, 3, 17, 51, 53, 61, 127, 159, 183, 381, 901, 1037, 2159, 2703, 3111, 3233, 6477, 6731, 7747, 9699, 20193, 23241, 54961, 114427, 131699, 164883, 343281, 395097, 410591, 1231773, 6980047, 20940141]

約数ペア:

[(1, 20940141), (3, 6980047), (17, 1231773), (51, 410591), (53, 395097), (61, 343281), (127, 164883), (159, 131699), (183, 114427), (381, 54961), (901, 23241), (1037, 20193), (2159, 9699), (2703, 7747), (3111, 6731), (3233, 6477)]