21694428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 144

約数和(自身を含む): 69189120

約数和(自身を除く): 47494692

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 19, 21, 23, 28, 36, 38, 42, 46, 57, 63, 69, 76, 84, 92, 114, 126, 133, 138, 161, 171, 197, 207, 228, 252, 266, 276, 322, 342, 394, 399, 414, 437, 483, 532, 591, 644, 684, 788, 798, 828, 874, 966, 1182, 1197, 1311, 1379, 1449, 1596, 1748, 1773, 1932, 2364, 2394, 2622, 2758, 2898, 3059, 3546, 3743, 3933, 4137, 4531, 4788, 5244, 5516, 5796, 6118, 7092, 7486, 7866, 8274, 9062, 9177, 11229, 12236, 12411, 13593, 14972, 15732, 16548, 18124, 18354, 22458, 24822, 26201, 27186, 27531, 31717, 33687, 36708, 40779, 44916, 49644, 52402, 54372, 55062, 63434, 67374, 78603, 81558, 86089, 95151, 104804, 110124, 126868, 134748, 157206, 163116, 172178, 190302, 235809, 258267, 285453, 314412, 344356, 380604, 471618, 516534, 570906, 602623, 774801, 943236, 1033068, 1141812, 1205246, 1549602, 1807869, 2410492, 3099204, 3615738, 5423607, 7231476, 10847214, 21694428]

約数ペア:

[(1, 21694428), (2, 10847214), (3, 7231476), (4, 5423607), (6, 3615738), (7, 3099204), (9, 2410492), (12, 1807869), (14, 1549602), (18, 1205246), (19, 1141812), (21, 1033068), (23, 943236), (28, 774801), (36, 602623), (38, 570906), (42, 516534), (46, 471618), (57, 380604), (63, 344356), (69, 314412), (76, 285453), (84, 258267), (92, 235809), (114, 190302), (126, 172178), (133, 163116), (138, 157206), (161, 134748), (171, 126868), (197, 110124), (207, 104804), (228, 95151), (252, 86089), (266, 81558), (276, 78603), (322, 67374), (342, 63434), (394, 55062), (399, 54372), (414, 52402), (437, 49644), (483, 44916), (532, 40779), (591, 36708), (644, 33687), (684, 31717), (788, 27531), (798, 27186), (828, 26201), (874, 24822), (966, 22458), (1182, 18354), (1197, 18124), (1311, 16548), (1379, 15732), (1449, 14972), (1596, 13593), (1748, 12411), (1773, 12236), (1932, 11229), (2364, 9177), (2394, 9062), (2622, 8274), (2758, 7866), (2898, 7486), (3059, 7092), (3546, 6118), (3743, 5796), (3933, 5516), (4137, 5244), (4531, 4788)]