20711208

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:167

約数の個数: 128

約数和(自身を含む): 62853120

約数和(自身を除く): 42141912

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 43, 47, 56, 61, 84, 86, 94, 122, 129, 141, 168, 172, 183, 188, 244, 258, 282, 301, 329, 344, 366, 376, 427, 488, 516, 564, 602, 658, 732, 854, 903, 987, 1032, 1128, 1204, 1281, 1316, 1464, 1708, 1806, 1974, 2021, 2408, 2562, 2623, 2632, 2867, 3416, 3612, 3948, 4042, 5124, 5246, 5734, 6063, 7224, 7869, 7896, 8084, 8601, 10248, 10492, 11468, 12126, 14147, 15738, 16168, 17202, 18361, 20069, 20984, 22936, 24252, 28294, 31476, 34404, 36722, 40138, 42441, 48504, 55083, 56588, 60207, 62952, 68808, 73444, 80276, 84882, 110166, 113176, 120414, 123281, 146888, 160552, 169764, 220332, 240828, 246562, 339528, 369843, 440664, 481656, 493124, 739686, 862967, 986248, 1479372, 1725934, 2588901, 2958744, 3451868, 5177802, 6903736, 10355604, 20711208]

約数ペア:

[(1, 20711208), (2, 10355604), (3, 6903736), (4, 5177802), (6, 3451868), (7, 2958744), (8, 2588901), (12, 1725934), (14, 1479372), (21, 986248), (24, 862967), (28, 739686), (42, 493124), (43, 481656), (47, 440664), (56, 369843), (61, 339528), (84, 246562), (86, 240828), (94, 220332), (122, 169764), (129, 160552), (141, 146888), (168, 123281), (172, 120414), (183, 113176), (188, 110166), (244, 84882), (258, 80276), (282, 73444), (301, 68808), (329, 62952), (344, 60207), (366, 56588), (376, 55083), (427, 48504), (488, 42441), (516, 40138), (564, 36722), (602, 34404), (658, 31476), (732, 28294), (854, 24252), (903, 22936), (987, 20984), (1032, 20069), (1128, 18361), (1204, 17202), (1281, 16168), (1316, 15738), (1464, 14147), (1708, 12126), (1806, 11468), (1974, 10492), (2021, 10248), (2408, 8601), (2562, 8084), (2623, 7896), (2632, 7869), (2867, 7224), (3416, 6063), (3612, 5734), (3948, 5246), (4042, 5124)]