640020480

素因数分解:

$2^{12}\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{947}}^1$

素因数の和:990

約数の個数: 208

約数和(自身を含む): 2236339584

約数和(自身を除く): 1596319104

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 128, 132, 160, 165, 176, 192, 220, 240, 256, 264, 320, 330, 352, 384, 440, 480, 512, 528, 640, 660, 704, 768, 880, 947, 960, 1024, 1056, 1280, 1320, 1408, 1536, 1760, 1894, 1920, 2048, 2112, 2560, 2640, 2816, 2841, 3072, 3520, 3788, 3840, 4096, 4224, 4735, 5120, 5280, 5632, 5682, 6144, 7040, 7576, 7680, 8448, 9470, 10240, 10417, 10560, 11264, 11364, 12288, 14080, 14205, 15152, 15360, 16896, 18940, 20480, 20834, 21120, 22528, 22728, 28160, 28410, 30304, 30720, 31251, 33792, 37880, 41668, 42240, 45056, 45456, 52085, 56320, 56820, 60608, 61440, 62502, 67584, 75760, 83336, 84480, 90912, 104170, 112640, 113640, 121216, 125004, 135168, 151520, 156255, 166672, 168960, 181824, 208340, 225280, 227280, 242432, 250008, 303040, 312510, 333344, 337920, 363648, 416680, 454560, 484864, 500016, 606080, 625020, 666688, 675840, 727296, 833360, 909120, 969728, 1000032, 1212160, 1250040, 1333376, 1454592, 1666720, 1818240, 1939456, 2000064, 2424320, 2500080, 2666752, 2909184, 3333440, 3636480, 3878912, 4000128, 4848640, 5000160, 5333504, 5818368, 6666880, 7272960, 8000256, 9697280, 10000320, 10667008, 11636736, 13333760, 14545920, 16000512, 19394560, 20000640, 21334016, 26667520, 29091840, 32001024, 40001280, 42668032, 53335040, 58183680, 64002048, 80002560, 106670080, 128004096, 160005120, 213340160, 320010240, 640020480]

約数ペア:

[(1, 640020480), (2, 320010240), (3, 213340160), (4, 160005120), (5, 128004096), (6, 106670080), (8, 80002560), (10, 64002048), (11, 58183680), (12, 53335040), (15, 42668032), (16, 40001280), (20, 32001024), (22, 29091840), (24, 26667520), (30, 21334016), (32, 20000640), (33, 19394560), (40, 16000512), (44, 14545920), (48, 13333760), (55, 11636736), (60, 10667008), (64, 10000320), (66, 9697280), (80, 8000256), (88, 7272960), (96, 6666880), (110, 5818368), (120, 5333504), (128, 5000160), (132, 4848640), (160, 4000128), (165, 3878912), (176, 3636480), (192, 3333440), (220, 2909184), (240, 2666752), (256, 2500080), (264, 2424320), (320, 2000064), (330, 1939456), (352, 1818240), (384, 1666720), (440, 1454592), (480, 1333376), (512, 1250040), (528, 1212160), (640, 1000032), (660, 969728), (704, 909120), (768, 833360), (880, 727296), (947, 675840), (960, 666688), (1024, 625020), (1056, 606080), (1280, 500016), (1320, 484864), (1408, 454560), (1536, 416680), (1760, 363648), (1894, 337920), (1920, 333344), (2048, 312510), (2112, 303040), (2560, 250008), (2640, 242432), (2816, 227280), (2841, 225280), (3072, 208340), (3520, 181824), (3788, 168960), (3840, 166672), (4096, 156255), (4224, 151520), (4735, 135168), (5120, 125004), (5280, 121216), (5632, 113640), (5682, 112640), (6144, 104170), (7040, 90912), (7576, 84480), (7680, 83336), (8448, 75760), (9470, 67584), (10240, 62502), (10417, 61440), (10560, 60608), (11264, 56820), (11364, 56320), (12288, 52085), (14080, 45456), (14205, 45056), (15152, 42240), (15360, 41668), (16896, 37880), (18940, 33792), (20480, 31251), (20834, 30720), (21120, 30304), (22528, 28410), (22728, 28160)]