13381990

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:432

約数の個数: 32

約数和(自身を含む): 24966144

約数和(自身を除く): 11584154

約数列:

[1, 2, 5, 10, 41, 82, 127, 205, 254, 257, 410, 514, 635, 1270, 1285, 2570, 5207, 10414, 10537, 21074, 26035, 32639, 52070, 52685, 65278, 105370, 163195, 326390, 1338199, 2676398, 6690995, 13381990]

約数ペア:

[(1, 13381990), (2, 6690995), (5, 2676398), (10, 1338199), (41, 326390), (82, 163195), (127, 105370), (205, 65278), (254, 52685), (257, 52070), (410, 32639), (514, 26035), (635, 21074), (1270, 10537), (1285, 10414), (2570, 5207)]