20638688

素因数分解:

$2^5\times 7^1\times {\mathrm{199}}^1\times {\mathrm{463}}^1$

素因数の和:679

約数の個数: 48

約数和(自身を含む): 46771200

約数和(自身を除く): 26132512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 199, 224, 398, 463, 796, 926, 1393, 1592, 1852, 2786, 3184, 3241, 3704, 5572, 6368, 6482, 7408, 11144, 12964, 14816, 22288, 25928, 44576, 51856, 92137, 103712, 184274, 368548, 644959, 737096, 1289918, 1474192, 2579836, 2948384, 5159672, 10319344, 20638688]

約数ペア:

[(1, 20638688), (2, 10319344), (4, 5159672), (7, 2948384), (8, 2579836), (14, 1474192), (16, 1289918), (28, 737096), (32, 644959), (56, 368548), (112, 184274), (199, 103712), (224, 92137), (398, 51856), (463, 44576), (796, 25928), (926, 22288), (1393, 14816), (1592, 12964), (1852, 11144), (2786, 7408), (3184, 6482), (3241, 6368), (3704, 5572)]