20620719

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 38413440

約数和(自身を除く): 17792721

約数列:

[1, 3, 7, 9, 19, 21, 23, 49, 57, 63, 69, 107, 133, 147, 161, 171, 207, 321, 399, 437, 441, 483, 749, 931, 963, 1127, 1197, 1311, 1449, 2033, 2247, 2461, 2793, 3059, 3381, 3933, 5243, 6099, 6741, 7383, 8379, 9177, 10143, 14231, 15729, 17227, 18297, 21413, 22149, 27531, 42693, 46759, 47187, 51681, 64239, 99617, 120589, 128079, 140277, 155043, 192717, 298851, 327313, 361767, 420831, 896553, 981939, 1085301, 2291191, 2945817, 6873573, 20620719]

約数ペア:

[(1, 20620719), (3, 6873573), (7, 2945817), (9, 2291191), (19, 1085301), (21, 981939), (23, 896553), (49, 420831), (57, 361767), (63, 327313), (69, 298851), (107, 192717), (133, 155043), (147, 140277), (161, 128079), (171, 120589), (207, 99617), (321, 64239), (399, 51681), (437, 47187), (441, 46759), (483, 42693), (749, 27531), (931, 22149), (963, 21413), (1127, 18297), (1197, 17227), (1311, 15729), (1449, 14231), (2033, 10143), (2247, 9177), (2461, 8379), (2793, 7383), (3059, 6741), (3381, 6099), (3933, 5243)]