20187488984

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{265541}}^1$

素因数の和:265620

約数の個数: 64

約数和(自身を含む): 44164945440

約数和(自身を除く): 23977456456

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 43, 52, 68, 86, 104, 136, 172, 221, 344, 442, 559, 731, 884, 1118, 1462, 1768, 2236, 2924, 4472, 5848, 9503, 19006, 38012, 76024, 265541, 531082, 1062164, 2124328, 3452033, 4514197, 6904066, 9028394, 11418263, 13808132, 18056788, 22836526, 27616264, 36113576, 45673052, 58684561, 91346104, 117369122, 148437419, 194110471, 234738244, 296874838, 388220942, 469476488, 593749676, 776441884, 1187499352, 1552883768, 2523436123, 5046872246, 10093744492, 20187488984]

約数ペア:

[(1, 20187488984), (2, 10093744492), (4, 5046872246), (8, 2523436123), (13, 1552883768), (17, 1187499352), (26, 776441884), (34, 593749676), (43, 469476488), (52, 388220942), (68, 296874838), (86, 234738244), (104, 194110471), (136, 148437419), (172, 117369122), (221, 91346104), (344, 58684561), (442, 45673052), (559, 36113576), (731, 27616264), (884, 22836526), (1118, 18056788), (1462, 13808132), (1768, 11418263), (2236, 9028394), (2924, 6904066), (4472, 4514197), (5848, 3452033), (9503, 2124328), (19006, 1062164), (38012, 531082), (76024, 265541)]