20964681

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{401}}^1$

素因数の和:601

約数の個数: 24

約数和(自身を含む): 31376904

約数和(自身を除く): 10412223

約数列:

[1, 3, 9, 37, 111, 157, 333, 401, 471, 1203, 1413, 3609, 5809, 14837, 17427, 44511, 52281, 62957, 133533, 188871, 566613, 2329409, 6988227, 20964681]

約数ペア:

[(1, 20964681), (3, 6988227), (9, 2329409), (37, 566613), (111, 188871), (157, 133533), (333, 62957), (401, 52281), (471, 44511), (1203, 17427), (1413, 14837), (3609, 5809)]