20121984580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1\times {\mathrm{4831}}^1$

素因数の和:5069

約数の個数: 96

約数和(自身を含む): 45345807360

約数和(自身を除く): 25223822780

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 113, 190, 194, 226, 380, 388, 452, 485, 565, 970, 1130, 1843, 1940, 2147, 2260, 3686, 4294, 4831, 7372, 8588, 9215, 9662, 10735, 10961, 18430, 19324, 21470, 21922, 24155, 36860, 42940, 43844, 48310, 54805, 91789, 96620, 109610, 183578, 208259, 219220, 367156, 416518, 458945, 468607, 545903, 833036, 917890, 937214, 1041295, 1091806, 1835780, 1874428, 2082590, 2183612, 2343035, 2729515, 4165180, 4686070, 5459030, 8903533, 9372140, 10372157, 10918060, 17807066, 20744314, 35614132, 41488628, 44517665, 51860785, 52952591, 89035330, 103721570, 105905182, 178070660, 207443140, 211810364, 264762955, 529525910, 1006099229, 1059051820, 2012198458, 4024396916, 5030496145, 10060992290, 20121984580]

約数ペア:

[(1, 20121984580), (2, 10060992290), (4, 5030496145), (5, 4024396916), (10, 2012198458), (19, 1059051820), (20, 1006099229), (38, 529525910), (76, 264762955), (95, 211810364), (97, 207443140), (113, 178070660), (190, 105905182), (194, 103721570), (226, 89035330), (380, 52952591), (388, 51860785), (452, 44517665), (485, 41488628), (565, 35614132), (970, 20744314), (1130, 17807066), (1843, 10918060), (1940, 10372157), (2147, 9372140), (2260, 8903533), (3686, 5459030), (4294, 4686070), (4831, 4165180), (7372, 2729515), (8588, 2343035), (9215, 2183612), (9662, 2082590), (10735, 1874428), (10961, 1835780), (18430, 1091806), (19324, 1041295), (21470, 937214), (21922, 917890), (24155, 833036), (36860, 545903), (42940, 468607), (43844, 458945), (48310, 416518), (54805, 367156), (91789, 219220), (96620, 208259), (109610, 183578)]