20800836

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{419}}^1$

素因数の和:633

約数の個数: 72

約数和(自身を含む): 60540480

約数和(自身を除く): 39739644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 419, 591, 788, 838, 1182, 1257, 1379, 1676, 1773, 2364, 2514, 2758, 2933, 3546, 3771, 4137, 5028, 5516, 5866, 7092, 7542, 8274, 8799, 11732, 12411, 15084, 16548, 17598, 24822, 26397, 35196, 49644, 52794, 82543, 105588, 165086, 247629, 330172, 495258, 577801, 742887, 990516, 1155602, 1485774, 1733403, 2311204, 2971548, 3466806, 5200209, 6933612, 10400418, 20800836]

約数ペア:

[(1, 20800836), (2, 10400418), (3, 6933612), (4, 5200209), (6, 3466806), (7, 2971548), (9, 2311204), (12, 1733403), (14, 1485774), (18, 1155602), (21, 990516), (28, 742887), (36, 577801), (42, 495258), (63, 330172), (84, 247629), (126, 165086), (197, 105588), (252, 82543), (394, 52794), (419, 49644), (591, 35196), (788, 26397), (838, 24822), (1182, 17598), (1257, 16548), (1379, 15084), (1676, 12411), (1773, 11732), (2364, 8799), (2514, 8274), (2758, 7542), (2933, 7092), (3546, 5866), (3771, 5516), (4137, 5028)]