19728688

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:234

約数の個数: 80

約数和(自身を含む): 46981120

約数和(自身を除く): 27252432

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 56, 73, 76, 112, 127, 133, 146, 152, 254, 266, 292, 304, 508, 511, 532, 584, 889, 1016, 1022, 1064, 1168, 1387, 1778, 2032, 2044, 2128, 2413, 2774, 3556, 4088, 4826, 5548, 7112, 8176, 9271, 9652, 9709, 11096, 14224, 16891, 18542, 19304, 19418, 22192, 33782, 37084, 38608, 38836, 64897, 67564, 74168, 77672, 129794, 135128, 148336, 155344, 176149, 259588, 270256, 352298, 519176, 704596, 1038352, 1233043, 1409192, 2466086, 2818384, 4932172, 9864344, 19728688]

約数ペア:

[(1, 19728688), (2, 9864344), (4, 4932172), (7, 2818384), (8, 2466086), (14, 1409192), (16, 1233043), (19, 1038352), (28, 704596), (38, 519176), (56, 352298), (73, 270256), (76, 259588), (112, 176149), (127, 155344), (133, 148336), (146, 135128), (152, 129794), (254, 77672), (266, 74168), (292, 67564), (304, 64897), (508, 38836), (511, 38608), (532, 37084), (584, 33782), (889, 22192), (1016, 19418), (1022, 19304), (1064, 18542), (1168, 16891), (1387, 14224), (1778, 11096), (2032, 9709), (2044, 9652), (2128, 9271), (2413, 8176), (2774, 7112), (3556, 5548), (4088, 4826)]