19981856912

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1\times {\mathrm{461}}^1$

素因数の和:936

約数の個数: 80

約数和(自身を含む): 39729457152

約数和(自身を除く): 19747600240

約数列:

[1, 2, 4, 8, 16, 83, 127, 166, 254, 257, 332, 461, 508, 514, 664, 922, 1016, 1028, 1328, 1844, 2032, 2056, 3688, 4112, 7376, 10541, 21082, 21331, 32639, 38263, 42164, 42662, 58547, 65278, 76526, 84328, 85324, 117094, 118477, 130556, 153052, 168656, 170648, 234188, 236954, 261112, 306104, 341296, 468376, 473908, 522224, 612208, 936752, 947816, 1895632, 2709037, 4859401, 5418074, 9718802, 9833591, 10836148, 15046579, 19437604, 19667182, 21672296, 30093158, 38875208, 39334364, 43344592, 60186316, 77750416, 78668728, 120372632, 157337456, 240745264, 1248866057, 2497732114, 4995464228, 9990928456, 19981856912]

約数ペア:

[(1, 19981856912), (2, 9990928456), (4, 4995464228), (8, 2497732114), (16, 1248866057), (83, 240745264), (127, 157337456), (166, 120372632), (254, 78668728), (257, 77750416), (332, 60186316), (461, 43344592), (508, 39334364), (514, 38875208), (664, 30093158), (922, 21672296), (1016, 19667182), (1028, 19437604), (1328, 15046579), (1844, 10836148), (2032, 9833591), (2056, 9718802), (3688, 5418074), (4112, 4859401), (7376, 2709037), (10541, 1895632), (21082, 947816), (21331, 936752), (32639, 612208), (38263, 522224), (42164, 473908), (42662, 468376), (58547, 341296), (65278, 306104), (76526, 261112), (84328, 236954), (85324, 234188), (117094, 170648), (118477, 168656), (130556, 153052)]