21115752

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:175

約数の個数: 128

約数和(自身を含む): 64204800

約数和(自身を除く): 43089048

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 37, 42, 43, 56, 74, 79, 84, 86, 111, 129, 148, 158, 168, 172, 222, 237, 258, 259, 296, 301, 316, 344, 444, 474, 516, 518, 553, 602, 632, 777, 888, 903, 948, 1032, 1036, 1106, 1204, 1554, 1591, 1659, 1806, 1896, 2072, 2212, 2408, 2923, 3108, 3182, 3318, 3397, 3612, 4424, 4773, 5846, 6216, 6364, 6636, 6794, 7224, 8769, 9546, 10191, 11137, 11692, 12728, 13272, 13588, 17538, 19092, 20382, 20461, 22274, 23384, 23779, 27176, 33411, 35076, 38184, 40764, 40922, 44548, 47558, 61383, 66822, 70152, 71337, 81528, 81844, 89096, 95116, 122766, 125689, 133644, 142674, 163688, 190232, 245532, 251378, 267288, 285348, 377067, 491064, 502756, 570696, 754134, 879823, 1005512, 1508268, 1759646, 2639469, 3016536, 3519292, 5278938, 7038584, 10557876, 21115752]

約数ペア:

[(1, 21115752), (2, 10557876), (3, 7038584), (4, 5278938), (6, 3519292), (7, 3016536), (8, 2639469), (12, 1759646), (14, 1508268), (21, 1005512), (24, 879823), (28, 754134), (37, 570696), (42, 502756), (43, 491064), (56, 377067), (74, 285348), (79, 267288), (84, 251378), (86, 245532), (111, 190232), (129, 163688), (148, 142674), (158, 133644), (168, 125689), (172, 122766), (222, 95116), (237, 89096), (258, 81844), (259, 81528), (296, 71337), (301, 70152), (316, 66822), (344, 61383), (444, 47558), (474, 44548), (516, 40922), (518, 40764), (553, 38184), (602, 35076), (632, 33411), (777, 27176), (888, 23779), (903, 23384), (948, 22274), (1032, 20461), (1036, 20382), (1106, 19092), (1204, 17538), (1554, 13588), (1591, 13272), (1659, 12728), (1806, 11692), (1896, 11137), (2072, 10191), (2212, 9546), (2408, 8769), (2923, 7224), (3108, 6794), (3182, 6636), (3318, 6364), (3397, 6216), (3612, 5846), (4424, 4773)]