81404778

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{59}}^1$

素因数の和:129

約数の個数: 144

約数和(自身を含む): 218907360

約数和(自身を除く): 137502582

約数列:

[1, 2, 3, 6, 7, 13, 14, 19, 21, 26, 38, 39, 42, 49, 57, 59, 78, 91, 98, 114, 118, 133, 147, 177, 182, 247, 266, 273, 294, 354, 361, 399, 413, 494, 546, 637, 722, 741, 767, 798, 826, 931, 1083, 1121, 1239, 1274, 1482, 1534, 1729, 1862, 1911, 2166, 2242, 2301, 2478, 2527, 2793, 2891, 3363, 3458, 3822, 4602, 4693, 5054, 5187, 5369, 5586, 5782, 6726, 7581, 7847, 8673, 9386, 10374, 10738, 12103, 14079, 14573, 15162, 15694, 16107, 17346, 17689, 21299, 23541, 24206, 28158, 29146, 32214, 32851, 35378, 36309, 37583, 42598, 43719, 47082, 53067, 54929, 63897, 65702, 72618, 75166, 87438, 98553, 102011, 106134, 109858, 112749, 127794, 149093, 164787, 197106, 204022, 225498, 229957, 276887, 298186, 306033, 329574, 447279, 459914, 553774, 612066, 689871, 714077, 830661, 894558, 1043651, 1379742, 1428154, 1661322, 1938209, 2087302, 2142231, 3130953, 3876418, 4284462, 5814627, 6261906, 11629254, 13567463, 27134926, 40702389, 81404778]

約数ペア:

[(1, 81404778), (2, 40702389), (3, 27134926), (6, 13567463), (7, 11629254), (13, 6261906), (14, 5814627), (19, 4284462), (21, 3876418), (26, 3130953), (38, 2142231), (39, 2087302), (42, 1938209), (49, 1661322), (57, 1428154), (59, 1379742), (78, 1043651), (91, 894558), (98, 830661), (114, 714077), (118, 689871), (133, 612066), (147, 553774), (177, 459914), (182, 447279), (247, 329574), (266, 306033), (273, 298186), (294, 276887), (354, 229957), (361, 225498), (399, 204022), (413, 197106), (494, 164787), (546, 149093), (637, 127794), (722, 112749), (741, 109858), (767, 106134), (798, 102011), (826, 98553), (931, 87438), (1083, 75166), (1121, 72618), (1239, 65702), (1274, 63897), (1482, 54929), (1534, 53067), (1729, 47082), (1862, 43719), (1911, 42598), (2166, 37583), (2242, 36309), (2301, 35378), (2478, 32851), (2527, 32214), (2793, 29146), (2891, 28158), (3363, 24206), (3458, 23541), (3822, 21299), (4602, 17689), (4693, 17346), (5054, 16107), (5187, 15694), (5369, 15162), (5586, 14573), (5782, 14079), (6726, 12103), (7581, 10738), (7847, 10374), (8673, 9386)]