20968630

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{257}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 18040970

約数列:

[1, 2, 5, 10, 41, 82, 199, 205, 257, 398, 410, 514, 995, 1285, 1990, 2570, 8159, 10537, 16318, 21074, 40795, 51143, 52685, 81590, 102286, 105370, 255715, 511430, 2096863, 4193726, 10484315, 20968630]

約数ペア:

[(1, 20968630), (2, 10484315), (5, 4193726), (10, 2096863), (41, 511430), (82, 255715), (199, 105370), (205, 102286), (257, 81590), (398, 52685), (410, 51143), (514, 40795), (995, 21074), (1285, 16318), (1990, 10537), (2570, 8159)]