81400320

素因数分解:

$2^9\times 3^2\times 5^1\times {\mathrm{3533}}^1$

素因数の和:3562

約数の個数: 120

約数和(自身を含む): 281991996

約数和(自身を除く): 200591676

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 256, 288, 320, 360, 384, 480, 512, 576, 640, 720, 768, 960, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3533, 3840, 4608, 5760, 7066, 7680, 10599, 11520, 14132, 17665, 21198, 23040, 28264, 31797, 35330, 42396, 52995, 56528, 63594, 70660, 84792, 105990, 113056, 127188, 141320, 158985, 169584, 211980, 226112, 254376, 282640, 317970, 339168, 423960, 452224, 508752, 565280, 635940, 678336, 847920, 904448, 1017504, 1130560, 1271880, 1356672, 1695840, 1808896, 2035008, 2261120, 2543760, 2713344, 3391680, 4070016, 4522240, 5087520, 5426688, 6783360, 8140032, 9044480, 10175040, 13566720, 16280064, 20350080, 27133440, 40700160, 81400320]

約数ペア:

[(1, 81400320), (2, 40700160), (3, 27133440), (4, 20350080), (5, 16280064), (6, 13566720), (8, 10175040), (9, 9044480), (10, 8140032), (12, 6783360), (15, 5426688), (16, 5087520), (18, 4522240), (20, 4070016), (24, 3391680), (30, 2713344), (32, 2543760), (36, 2261120), (40, 2035008), (45, 1808896), (48, 1695840), (60, 1356672), (64, 1271880), (72, 1130560), (80, 1017504), (90, 904448), (96, 847920), (120, 678336), (128, 635940), (144, 565280), (160, 508752), (180, 452224), (192, 423960), (240, 339168), (256, 317970), (288, 282640), (320, 254376), (360, 226112), (384, 211980), (480, 169584), (512, 158985), (576, 141320), (640, 127188), (720, 113056), (768, 105990), (960, 84792), (1152, 70660), (1280, 63594), (1440, 56528), (1536, 52995), (1920, 42396), (2304, 35330), (2560, 31797), (2880, 28264), (3533, 23040), (3840, 21198), (4608, 17665), (5760, 14132), (7066, 11520), (7680, 10599)]