21000481509

素因数分解:

$3^1\times 7^1\times {\mathrm{739}}^1\times {\mathrm{877}}^1\times {\mathrm{1543}}^1$

素因数の和:3169

約数の個数: 32

約数和(自身を含む): 32101365760

約数和(自身を除く): 11100884251

約数列:

[1, 3, 7, 21, 739, 877, 1543, 2217, 2631, 4629, 5173, 6139, 10801, 15519, 18417, 32403, 648103, 1140277, 1353211, 1944309, 3420831, 4059633, 4536721, 7981939, 9472477, 13610163, 23945817, 28417431, 1000022929, 3000068787, 7000160503, 21000481509]

約数ペア:

[(1, 21000481509), (3, 7000160503), (7, 3000068787), (21, 1000022929), (739, 28417431), (877, 23945817), (1543, 13610163), (2217, 9472477), (2631, 7981939), (4629, 4536721), (5173, 4059633), (6139, 3420831), (10801, 1944309), (15519, 1353211), (18417, 1140277), (32403, 648103)]