20691384

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:213

約数の個数: 128

約数和(自身を含む): 63590400

約数和(自身を除く): 42899016

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 29, 31, 42, 56, 58, 62, 84, 87, 93, 116, 124, 137, 168, 174, 186, 203, 217, 232, 248, 274, 348, 372, 406, 411, 434, 548, 609, 651, 696, 744, 812, 822, 868, 899, 959, 1096, 1218, 1302, 1624, 1644, 1736, 1798, 1918, 2436, 2604, 2697, 2877, 3288, 3596, 3836, 3973, 4247, 4872, 5208, 5394, 5754, 6293, 7192, 7672, 7946, 8494, 10788, 11508, 11919, 12586, 12741, 15892, 16988, 18879, 21576, 23016, 23838, 25172, 25482, 27811, 29729, 31784, 33976, 37758, 47676, 50344, 50964, 55622, 59458, 75516, 83433, 89187, 95352, 101928, 111244, 118916, 123163, 151032, 166866, 178374, 222488, 237832, 246326, 333732, 356748, 369489, 492652, 667464, 713496, 738978, 862141, 985304, 1477956, 1724282, 2586423, 2955912, 3448564, 5172846, 6897128, 10345692, 20691384]

約数ペア:

[(1, 20691384), (2, 10345692), (3, 6897128), (4, 5172846), (6, 3448564), (7, 2955912), (8, 2586423), (12, 1724282), (14, 1477956), (21, 985304), (24, 862141), (28, 738978), (29, 713496), (31, 667464), (42, 492652), (56, 369489), (58, 356748), (62, 333732), (84, 246326), (87, 237832), (93, 222488), (116, 178374), (124, 166866), (137, 151032), (168, 123163), (174, 118916), (186, 111244), (203, 101928), (217, 95352), (232, 89187), (248, 83433), (274, 75516), (348, 59458), (372, 55622), (406, 50964), (411, 50344), (434, 47676), (548, 37758), (609, 33976), (651, 31784), (696, 29729), (744, 27811), (812, 25482), (822, 25172), (868, 23838), (899, 23016), (959, 21576), (1096, 18879), (1218, 16988), (1302, 15892), (1624, 12741), (1644, 12586), (1736, 11919), (1798, 11508), (1918, 10788), (2436, 8494), (2604, 7946), (2697, 7672), (2877, 7192), (3288, 6293), (3596, 5754), (3836, 5394), (3973, 5208), (4247, 4872)]