21299559516

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{193}}^1\times {\mathrm{43177}}^1$

素因数の和:43451

約数の個数: 72

約数和(自身を含む): 54883037664

約数和(自身を除く): 33583478148

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 193, 213, 284, 386, 426, 579, 639, 772, 852, 1158, 1278, 1737, 2316, 2556, 3474, 6948, 13703, 27406, 41109, 43177, 54812, 82218, 86354, 123327, 129531, 164436, 172708, 246654, 259062, 388593, 493308, 518124, 777186, 1554372, 3065567, 6131134, 8333161, 9196701, 12262268, 16666322, 18393402, 24999483, 27590103, 33332644, 36786804, 49998966, 55180206, 74998449, 99997932, 110360412, 149996898, 299993796, 591654431, 1183308862, 1774963293, 2366617724, 3549926586, 5324889879, 7099853172, 10649779758, 21299559516]

約数ペア:

[(1, 21299559516), (2, 10649779758), (3, 7099853172), (4, 5324889879), (6, 3549926586), (9, 2366617724), (12, 1774963293), (18, 1183308862), (36, 591654431), (71, 299993796), (142, 149996898), (193, 110360412), (213, 99997932), (284, 74998449), (386, 55180206), (426, 49998966), (579, 36786804), (639, 33332644), (772, 27590103), (852, 24999483), (1158, 18393402), (1278, 16666322), (1737, 12262268), (2316, 9196701), (2556, 8333161), (3474, 6131134), (6948, 3065567), (13703, 1554372), (27406, 777186), (41109, 518124), (43177, 493308), (54812, 388593), (82218, 259062), (86354, 246654), (123327, 172708), (129531, 164436)]