31237311

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1099

約数の個数: 32

約数和(自身を含む): 50790400

約数和(自身を除く): 19553089

約数列:

[1, 3, 7, 19, 21, 57, 79, 133, 237, 399, 553, 991, 1501, 1659, 2973, 4503, 6937, 10507, 18829, 20811, 31521, 56487, 78289, 131803, 234867, 395409, 548023, 1487491, 1644069, 4462473, 10412437, 31237311]

約数ペア:

[(1, 31237311), (3, 10412437), (7, 4462473), (19, 1644069), (21, 1487491), (57, 548023), (79, 395409), (133, 234867), (237, 131803), (399, 78289), (553, 56487), (991, 31521), (1501, 20811), (1659, 18829), (2973, 10507), (4503, 6937)]