20861984

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1$

素因数の和:178

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 28925152

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 26, 32, 44, 47, 52, 88, 94, 97, 104, 143, 176, 188, 194, 208, 286, 352, 376, 388, 416, 517, 572, 611, 752, 776, 1034, 1067, 1144, 1222, 1261, 1504, 1552, 2068, 2134, 2288, 2444, 2522, 3104, 4136, 4268, 4559, 4576, 4888, 5044, 6721, 8272, 8536, 9118, 9776, 10088, 13442, 13871, 16544, 17072, 18236, 19552, 20176, 26884, 27742, 34144, 36472, 40352, 50149, 53768, 55484, 59267, 72944, 100298, 107536, 110968, 118534, 145888, 200596, 215072, 221936, 237068, 401192, 443872, 474136, 651937, 802384, 948272, 1303874, 1604768, 1896544, 2607748, 5215496, 10430992, 20861984]

約数ペア:

[(1, 20861984), (2, 10430992), (4, 5215496), (8, 2607748), (11, 1896544), (13, 1604768), (16, 1303874), (22, 948272), (26, 802384), (32, 651937), (44, 474136), (47, 443872), (52, 401192), (88, 237068), (94, 221936), (97, 215072), (104, 200596), (143, 145888), (176, 118534), (188, 110968), (194, 107536), (208, 100298), (286, 72944), (352, 59267), (376, 55484), (388, 53768), (416, 50149), (517, 40352), (572, 36472), (611, 34144), (752, 27742), (776, 26884), (1034, 20176), (1067, 19552), (1144, 18236), (1222, 17072), (1261, 16544), (1504, 13871), (1552, 13442), (2068, 10088), (2134, 9776), (2288, 9118), (2444, 8536), (2522, 8272), (3104, 6721), (4136, 5044), (4268, 4888), (4559, 4576)]