21520656

素因数分解:

$2^4\times 3^2\times {\mathrm{199}}^1\times {\mathrm{751}}^1$

素因数の和:964

約数の個数: 60

約数和(自身を含む): 60611200

約数和(自身を除く): 39090544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 199, 398, 597, 751, 796, 1194, 1502, 1592, 1791, 2253, 2388, 3004, 3184, 3582, 4506, 4776, 6008, 6759, 7164, 9012, 9552, 12016, 13518, 14328, 18024, 27036, 28656, 36048, 54072, 108144, 149449, 298898, 448347, 597796, 896694, 1195592, 1345041, 1793388, 2391184, 2690082, 3586776, 5380164, 7173552, 10760328, 21520656]

約数ペア:

[(1, 21520656), (2, 10760328), (3, 7173552), (4, 5380164), (6, 3586776), (8, 2690082), (9, 2391184), (12, 1793388), (16, 1345041), (18, 1195592), (24, 896694), (36, 597796), (48, 448347), (72, 298898), (144, 149449), (199, 108144), (398, 54072), (597, 36048), (751, 28656), (796, 27036), (1194, 18024), (1502, 14328), (1592, 13518), (1791, 12016), (2253, 9552), (2388, 9012), (3004, 7164), (3184, 6759), (3582, 6008), (4506, 4776)]