20521956

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{18793}}^1$

素因数の和:18820

約数の個数: 48

約数和(自身を含む): 58937984

約数和(自身を除く): 38416028

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 182, 273, 364, 546, 1092, 18793, 37586, 56379, 75172, 112758, 131551, 225516, 244309, 263102, 394653, 488618, 526204, 732927, 789306, 977236, 1465854, 1578612, 1710163, 2931708, 3420326, 5130489, 6840652, 10260978, 20521956]

約数ペア:

[(1, 20521956), (2, 10260978), (3, 6840652), (4, 5130489), (6, 3420326), (7, 2931708), (12, 1710163), (13, 1578612), (14, 1465854), (21, 977236), (26, 789306), (28, 732927), (39, 526204), (42, 488618), (52, 394653), (78, 263102), (84, 244309), (91, 225516), (156, 131551), (182, 112758), (273, 75172), (364, 56379), (546, 37586), (1092, 18793)]