20176983520

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{727}}^1\times {\mathrm{1949}}^1$

素因数の和:2780

約数の個数: 96

約数和(自身を含む): 48294792000

約数和(自身を除く): 28117808480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 356, 445, 712, 727, 890, 1424, 1454, 1780, 1949, 2848, 2908, 3560, 3635, 3898, 5816, 7120, 7270, 7796, 9745, 11632, 14240, 14540, 15592, 19490, 23264, 29080, 31184, 38980, 58160, 62368, 64703, 77960, 116320, 129406, 155920, 173461, 258812, 311840, 323515, 346922, 517624, 647030, 693844, 867305, 1035248, 1294060, 1387688, 1416923, 1734610, 2070496, 2588120, 2775376, 2833846, 3469220, 5176240, 5550752, 5667692, 6938440, 7084615, 10352480, 11335384, 13876880, 14169230, 22670768, 27753760, 28338460, 45341536, 56676920, 113353840, 126106147, 226707680, 252212294, 504424588, 630530735, 1008849176, 1261061470, 2017698352, 2522122940, 4035396704, 5044245880, 10088491760, 20176983520]

約数ペア:

[(1, 20176983520), (2, 10088491760), (4, 5044245880), (5, 4035396704), (8, 2522122940), (10, 2017698352), (16, 1261061470), (20, 1008849176), (32, 630530735), (40, 504424588), (80, 252212294), (89, 226707680), (160, 126106147), (178, 113353840), (356, 56676920), (445, 45341536), (712, 28338460), (727, 27753760), (890, 22670768), (1424, 14169230), (1454, 13876880), (1780, 11335384), (1949, 10352480), (2848, 7084615), (2908, 6938440), (3560, 5667692), (3635, 5550752), (3898, 5176240), (5816, 3469220), (7120, 2833846), (7270, 2775376), (7796, 2588120), (9745, 2070496), (11632, 1734610), (14240, 1416923), (14540, 1387688), (15592, 1294060), (19490, 1035248), (23264, 867305), (29080, 693844), (31184, 647030), (38980, 517624), (58160, 346922), (62368, 323515), (64703, 311840), (77960, 258812), (116320, 173461), (129406, 155920)]