20763820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 55319040

約数和(自身を除く): 34555220

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 97, 110, 139, 140, 154, 194, 220, 278, 308, 385, 388, 485, 556, 679, 695, 770, 970, 973, 1067, 1358, 1390, 1529, 1540, 1940, 1946, 2134, 2716, 2780, 3058, 3395, 3892, 4268, 4865, 5335, 6116, 6790, 7469, 7645, 9730, 10670, 10703, 13483, 13580, 14938, 15290, 19460, 21340, 21406, 26966, 29876, 30580, 37345, 42812, 53515, 53932, 67415, 74690, 94381, 107030, 134830, 148313, 149380, 188762, 214060, 269660, 296626, 377524, 471905, 593252, 741565, 943810, 1038191, 1483130, 1887620, 2076382, 2966260, 4152764, 5190955, 10381910, 20763820]

約数ペア:

[(1, 20763820), (2, 10381910), (4, 5190955), (5, 4152764), (7, 2966260), (10, 2076382), (11, 1887620), (14, 1483130), (20, 1038191), (22, 943810), (28, 741565), (35, 593252), (44, 471905), (55, 377524), (70, 296626), (77, 269660), (97, 214060), (110, 188762), (139, 149380), (140, 148313), (154, 134830), (194, 107030), (220, 94381), (278, 74690), (308, 67415), (385, 53932), (388, 53515), (485, 42812), (556, 37345), (679, 30580), (695, 29876), (770, 26966), (970, 21406), (973, 21340), (1067, 19460), (1358, 15290), (1390, 14938), (1529, 13580), (1540, 13483), (1940, 10703), (1946, 10670), (2134, 9730), (2716, 7645), (2780, 7469), (3058, 6790), (3395, 6116), (3892, 5335), (4268, 4865)]