20490496

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:207

約数の個数: 72

約数和(自身を含む): 45327744

約数和(自身を除く): 24837248

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 128, 131, 188, 208, 256, 262, 376, 416, 524, 611, 752, 832, 1048, 1222, 1504, 1664, 1703, 2096, 2444, 3008, 3328, 3406, 4192, 4888, 6016, 6157, 6812, 8384, 9776, 12032, 12314, 13624, 16768, 19552, 24628, 27248, 33536, 39104, 49256, 54496, 78208, 80041, 98512, 108992, 156416, 160082, 197024, 217984, 320164, 394048, 435968, 640328, 788096, 1280656, 1576192, 2561312, 5122624, 10245248, 20490496]

約数ペア:

[(1, 20490496), (2, 10245248), (4, 5122624), (8, 2561312), (13, 1576192), (16, 1280656), (26, 788096), (32, 640328), (47, 435968), (52, 394048), (64, 320164), (94, 217984), (104, 197024), (128, 160082), (131, 156416), (188, 108992), (208, 98512), (256, 80041), (262, 78208), (376, 54496), (416, 49256), (524, 39104), (611, 33536), (752, 27248), (832, 24628), (1048, 19552), (1222, 16768), (1504, 13624), (1664, 12314), (1703, 12032), (2096, 9776), (2444, 8384), (3008, 6812), (3328, 6157), (3406, 6016), (4192, 4888)]