21805896

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:179

約数の個数: 128

約数和(自身を含む): 66355200

約数和(自身を除く): 44549304

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 31, 42, 53, 56, 62, 79, 84, 93, 106, 124, 158, 159, 168, 186, 212, 217, 237, 248, 316, 318, 371, 372, 424, 434, 474, 553, 632, 636, 651, 742, 744, 868, 948, 1106, 1113, 1272, 1302, 1484, 1643, 1659, 1736, 1896, 2212, 2226, 2449, 2604, 2968, 3286, 3318, 4187, 4424, 4452, 4898, 4929, 5208, 6572, 6636, 7347, 8374, 8904, 9796, 9858, 11501, 12561, 13144, 13272, 14694, 16748, 17143, 19592, 19716, 23002, 25122, 29309, 29388, 33496, 34286, 34503, 39432, 46004, 50244, 51429, 58618, 58776, 68572, 69006, 87927, 92008, 100488, 102858, 117236, 129797, 137144, 138012, 175854, 205716, 234472, 259594, 276024, 351708, 389391, 411432, 519188, 703416, 778782, 908579, 1038376, 1557564, 1817158, 2725737, 3115128, 3634316, 5451474, 7268632, 10902948, 21805896]

約数ペア:

[(1, 21805896), (2, 10902948), (3, 7268632), (4, 5451474), (6, 3634316), (7, 3115128), (8, 2725737), (12, 1817158), (14, 1557564), (21, 1038376), (24, 908579), (28, 778782), (31, 703416), (42, 519188), (53, 411432), (56, 389391), (62, 351708), (79, 276024), (84, 259594), (93, 234472), (106, 205716), (124, 175854), (158, 138012), (159, 137144), (168, 129797), (186, 117236), (212, 102858), (217, 100488), (237, 92008), (248, 87927), (316, 69006), (318, 68572), (371, 58776), (372, 58618), (424, 51429), (434, 50244), (474, 46004), (553, 39432), (632, 34503), (636, 34286), (651, 33496), (742, 29388), (744, 29309), (868, 25122), (948, 23002), (1106, 19716), (1113, 19592), (1272, 17143), (1302, 16748), (1484, 14694), (1643, 13272), (1659, 13144), (1736, 12561), (1896, 11501), (2212, 9858), (2226, 9796), (2449, 8904), (2604, 8374), (2968, 7347), (3286, 6636), (3318, 6572), (4187, 5208), (4424, 4929), (4452, 4898)]