1440481280

素因数分解:

$2^{18}\times 5^1\times 7^1\times {\mathrm{157}}^1$

素因数の和:205

約数の個数: 152

約数和(自身を含む): 3976192608

約数和(自身を除く): 2535711328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 157, 160, 224, 256, 280, 314, 320, 448, 512, 560, 628, 640, 785, 896, 1024, 1099, 1120, 1256, 1280, 1570, 1792, 2048, 2198, 2240, 2512, 2560, 3140, 3584, 4096, 4396, 4480, 5024, 5120, 5495, 6280, 7168, 8192, 8792, 8960, 10048, 10240, 10990, 12560, 14336, 16384, 17584, 17920, 20096, 20480, 21980, 25120, 28672, 32768, 35168, 35840, 40192, 40960, 43960, 50240, 57344, 65536, 70336, 71680, 80384, 81920, 87920, 100480, 114688, 131072, 140672, 143360, 160768, 163840, 175840, 200960, 229376, 262144, 281344, 286720, 321536, 327680, 351680, 401920, 458752, 562688, 573440, 643072, 655360, 703360, 803840, 917504, 1125376, 1146880, 1286144, 1310720, 1406720, 1607680, 1835008, 2250752, 2293760, 2572288, 2813440, 3215360, 4501504, 4587520, 5144576, 5626880, 6430720, 9003008, 9175040, 10289152, 11253760, 12861440, 18006016, 20578304, 22507520, 25722880, 36012032, 41156608, 45015040, 51445760, 72024064, 90030080, 102891520, 144048128, 180060160, 205783040, 288096256, 360120320, 720240640, 1440481280]

約数ペア:

[(1, 1440481280), (2, 720240640), (4, 360120320), (5, 288096256), (7, 205783040), (8, 180060160), (10, 144048128), (14, 102891520), (16, 90030080), (20, 72024064), (28, 51445760), (32, 45015040), (35, 41156608), (40, 36012032), (56, 25722880), (64, 22507520), (70, 20578304), (80, 18006016), (112, 12861440), (128, 11253760), (140, 10289152), (157, 9175040), (160, 9003008), (224, 6430720), (256, 5626880), (280, 5144576), (314, 4587520), (320, 4501504), (448, 3215360), (512, 2813440), (560, 2572288), (628, 2293760), (640, 2250752), (785, 1835008), (896, 1607680), (1024, 1406720), (1099, 1310720), (1120, 1286144), (1256, 1146880), (1280, 1125376), (1570, 917504), (1792, 803840), (2048, 703360), (2198, 655360), (2240, 643072), (2512, 573440), (2560, 562688), (3140, 458752), (3584, 401920), (4096, 351680), (4396, 327680), (4480, 321536), (5024, 286720), (5120, 281344), (5495, 262144), (6280, 229376), (7168, 200960), (8192, 175840), (8792, 163840), (8960, 160768), (10048, 143360), (10240, 140672), (10990, 131072), (12560, 114688), (14336, 100480), (16384, 87920), (17584, 81920), (17920, 80384), (20096, 71680), (20480, 70336), (21980, 65536), (25120, 57344), (28672, 50240), (32768, 43960), (35168, 40960), (35840, 40192)]