18691295

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 28366848

約数和(自身を除く): 9675553

約数列:

[1, 5, 7, 23, 31, 35, 49, 107, 115, 155, 161, 217, 245, 535, 713, 749, 805, 1085, 1127, 1519, 2461, 3317, 3565, 3745, 4991, 5243, 5635, 7595, 12305, 16585, 17227, 23219, 24955, 26215, 34937, 76291, 86135, 116095, 120589, 162533, 174685, 381455, 534037, 602945, 812665, 2670185, 3738259, 18691295]

約数ペア:

[(1, 18691295), (5, 3738259), (7, 2670185), (23, 812665), (31, 602945), (35, 534037), (49, 381455), (107, 174685), (115, 162533), (155, 120589), (161, 116095), (217, 86135), (245, 76291), (535, 34937), (713, 26215), (749, 24955), (805, 23219), (1085, 17227), (1127, 16585), (1519, 12305), (2461, 7595), (3317, 5635), (3565, 5243), (3745, 4991)]