640942080

素因数分解:

$2^{18}\times 3^1\times 5^1\times {\mathrm{163}}^1$

素因数の和:207

約数の個数: 152

約数和(自身を含む): 2063593632

約数和(自身を除く): 1422651552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 163, 192, 240, 256, 320, 326, 384, 480, 489, 512, 640, 652, 768, 815, 960, 978, 1024, 1280, 1304, 1536, 1630, 1920, 1956, 2048, 2445, 2560, 2608, 3072, 3260, 3840, 3912, 4096, 4890, 5120, 5216, 6144, 6520, 7680, 7824, 8192, 9780, 10240, 10432, 12288, 13040, 15360, 15648, 16384, 19560, 20480, 20864, 24576, 26080, 30720, 31296, 32768, 39120, 40960, 41728, 49152, 52160, 61440, 62592, 65536, 78240, 81920, 83456, 98304, 104320, 122880, 125184, 131072, 156480, 163840, 166912, 196608, 208640, 245760, 250368, 262144, 312960, 327680, 333824, 393216, 417280, 491520, 500736, 625920, 655360, 667648, 786432, 834560, 983040, 1001472, 1251840, 1310720, 1335296, 1669120, 1966080, 2002944, 2503680, 2670592, 3338240, 3932160, 4005888, 5007360, 5341184, 6676480, 8011776, 10014720, 10682368, 13352960, 16023552, 20029440, 21364736, 26705920, 32047104, 40058880, 42729472, 53411840, 64094208, 80117760, 106823680, 128188416, 160235520, 213647360, 320471040, 640942080]

約数ペア:

[(1, 640942080), (2, 320471040), (3, 213647360), (4, 160235520), (5, 128188416), (6, 106823680), (8, 80117760), (10, 64094208), (12, 53411840), (15, 42729472), (16, 40058880), (20, 32047104), (24, 26705920), (30, 21364736), (32, 20029440), (40, 16023552), (48, 13352960), (60, 10682368), (64, 10014720), (80, 8011776), (96, 6676480), (120, 5341184), (128, 5007360), (160, 4005888), (163, 3932160), (192, 3338240), (240, 2670592), (256, 2503680), (320, 2002944), (326, 1966080), (384, 1669120), (480, 1335296), (489, 1310720), (512, 1251840), (640, 1001472), (652, 983040), (768, 834560), (815, 786432), (960, 667648), (978, 655360), (1024, 625920), (1280, 500736), (1304, 491520), (1536, 417280), (1630, 393216), (1920, 333824), (1956, 327680), (2048, 312960), (2445, 262144), (2560, 250368), (2608, 245760), (3072, 208640), (3260, 196608), (3840, 166912), (3912, 163840), (4096, 156480), (4890, 131072), (5120, 125184), (5216, 122880), (6144, 104320), (6520, 98304), (7680, 83456), (7824, 81920), (8192, 78240), (9780, 65536), (10240, 62592), (10432, 61440), (12288, 52160), (13040, 49152), (15360, 41728), (15648, 40960), (16384, 39120), (19560, 32768), (20480, 31296), (20864, 30720), (24576, 26080)]