991687680

素因数分解:

$2^{10}\times 3^2\times 5^1\times {\mathrm{21521}}^1$

素因数の和:21552

約数の個数: 132

約数和(自身を含む): 3436331652

約数和(自身を除く): 2444643972

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, 1024, 1152, 1280, 1440, 1536, 1920, 2304, 2560, 2880, 3072, 3840, 4608, 5120, 5760, 7680, 9216, 11520, 15360, 21521, 23040, 43042, 46080, 64563, 86084, 107605, 129126, 172168, 193689, 215210, 258252, 322815, 344336, 387378, 430420, 516504, 645630, 688672, 774756, 860840, 968445, 1033008, 1291260, 1377344, 1549512, 1721680, 1936890, 2066016, 2582520, 2754688, 3099024, 3443360, 3873780, 4132032, 5165040, 5509376, 6198048, 6886720, 7747560, 8264064, 10330080, 11018752, 12396096, 13773440, 15495120, 16528128, 20660160, 22037504, 24792192, 27546880, 30990240, 33056256, 41320320, 49584384, 55093760, 61980480, 66112512, 82640640, 99168768, 110187520, 123960960, 165281280, 198337536, 247921920, 330562560, 495843840, 991687680]

約数ペア:

[(1, 991687680), (2, 495843840), (3, 330562560), (4, 247921920), (5, 198337536), (6, 165281280), (8, 123960960), (9, 110187520), (10, 99168768), (12, 82640640), (15, 66112512), (16, 61980480), (18, 55093760), (20, 49584384), (24, 41320320), (30, 33056256), (32, 30990240), (36, 27546880), (40, 24792192), (45, 22037504), (48, 20660160), (60, 16528128), (64, 15495120), (72, 13773440), (80, 12396096), (90, 11018752), (96, 10330080), (120, 8264064), (128, 7747560), (144, 6886720), (160, 6198048), (180, 5509376), (192, 5165040), (240, 4132032), (256, 3873780), (288, 3443360), (320, 3099024), (360, 2754688), (384, 2582520), (480, 2066016), (512, 1936890), (576, 1721680), (640, 1549512), (720, 1377344), (768, 1291260), (960, 1033008), (1024, 968445), (1152, 860840), (1280, 774756), (1440, 688672), (1536, 645630), (1920, 516504), (2304, 430420), (2560, 387378), (2880, 344336), (3072, 322815), (3840, 258252), (4608, 215210), (5120, 193689), (5760, 172168), (7680, 129126), (9216, 107605), (11520, 86084), (15360, 64563), (21521, 46080), (23040, 43042)]