21891584

素因数分解:

$2^9\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1$

素因数の和:78

約数の個数: 120

約数和(自身を含む): 53916192

約数和(自身を除く): 32024608

約数列:

[1, 2, 4, 8, 11, 13, 16, 22, 23, 26, 32, 44, 46, 52, 64, 88, 92, 104, 128, 143, 169, 176, 184, 208, 253, 256, 286, 299, 338, 352, 368, 416, 506, 512, 572, 598, 676, 704, 736, 832, 1012, 1144, 1196, 1352, 1408, 1472, 1664, 1859, 2024, 2288, 2392, 2704, 2816, 2944, 3289, 3328, 3718, 3887, 4048, 4576, 4784, 5408, 5632, 5888, 6578, 6656, 7436, 7774, 8096, 9152, 9568, 10816, 11776, 13156, 14872, 15548, 16192, 18304, 19136, 21632, 26312, 29744, 31096, 32384, 36608, 38272, 42757, 43264, 52624, 59488, 62192, 64768, 73216, 76544, 85514, 86528, 105248, 118976, 124384, 129536, 153088, 171028, 210496, 237952, 248768, 342056, 420992, 475904, 497536, 684112, 841984, 951808, 995072, 1368224, 1683968, 1990144, 2736448, 5472896, 10945792, 21891584]

約数ペア:

[(1, 21891584), (2, 10945792), (4, 5472896), (8, 2736448), (11, 1990144), (13, 1683968), (16, 1368224), (22, 995072), (23, 951808), (26, 841984), (32, 684112), (44, 497536), (46, 475904), (52, 420992), (64, 342056), (88, 248768), (92, 237952), (104, 210496), (128, 171028), (143, 153088), (169, 129536), (176, 124384), (184, 118976), (208, 105248), (253, 86528), (256, 85514), (286, 76544), (299, 73216), (338, 64768), (352, 62192), (368, 59488), (416, 52624), (506, 43264), (512, 42757), (572, 38272), (598, 36608), (676, 32384), (704, 31096), (736, 29744), (832, 26312), (1012, 21632), (1144, 19136), (1196, 18304), (1352, 16192), (1408, 15548), (1472, 14872), (1664, 13156), (1859, 11776), (2024, 10816), (2288, 9568), (2392, 9152), (2704, 8096), (2816, 7774), (2944, 7436), (3289, 6656), (3328, 6578), (3718, 5888), (3887, 5632), (4048, 5408), (4576, 4784)]