28388139

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{103}}^1\times {\mathrm{191}}^1$

素因数の和:347

約数の個数: 32

約数和(自身を含む): 42491904

約数和(自身を除く): 14103765

約数列:

[1, 3, 13, 37, 39, 103, 111, 191, 309, 481, 573, 1339, 1443, 2483, 3811, 4017, 7067, 7449, 11433, 19673, 21201, 49543, 59019, 91871, 148629, 255749, 275613, 727901, 767247, 2183703, 9462713, 28388139]

約数ペア:

[(1, 28388139), (3, 9462713), (13, 2183703), (37, 767247), (39, 727901), (103, 275613), (111, 255749), (191, 148629), (309, 91871), (481, 59019), (573, 49543), (1339, 21201), (1443, 19673), (2483, 11433), (3811, 7449), (4017, 7067)]