990945280

素因数分解:

$2^{13}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1861}}^1$

素因数の和:1905

約数の個数: 112

約数和(自身を含む): 2562432264

約数和(自身を除く): 1571486984

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1024, 1040, 1280, 1664, 1861, 2048, 2080, 2560, 3328, 3722, 4096, 4160, 5120, 6656, 7444, 8192, 8320, 9305, 10240, 13312, 14888, 16640, 18610, 20480, 24193, 26624, 29776, 33280, 37220, 40960, 48386, 53248, 59552, 66560, 74440, 96772, 106496, 119104, 120965, 133120, 148880, 193544, 238208, 241930, 266240, 297760, 387088, 476416, 483860, 532480, 595520, 774176, 952832, 967720, 1191040, 1548352, 1905664, 1935440, 2382080, 3096704, 3811328, 3870880, 4764160, 6193408, 7622656, 7741760, 9528320, 12386816, 15245312, 15483520, 19056640, 24773632, 30967040, 38113280, 49547264, 61934080, 76226560, 99094528, 123868160, 198189056, 247736320, 495472640, 990945280]

約数ペア:

[(1, 990945280), (2, 495472640), (4, 247736320), (5, 198189056), (8, 123868160), (10, 99094528), (13, 76226560), (16, 61934080), (20, 49547264), (26, 38113280), (32, 30967040), (40, 24773632), (52, 19056640), (64, 15483520), (65, 15245312), (80, 12386816), (104, 9528320), (128, 7741760), (130, 7622656), (160, 6193408), (208, 4764160), (256, 3870880), (260, 3811328), (320, 3096704), (416, 2382080), (512, 1935440), (520, 1905664), (640, 1548352), (832, 1191040), (1024, 967720), (1040, 952832), (1280, 774176), (1664, 595520), (1861, 532480), (2048, 483860), (2080, 476416), (2560, 387088), (3328, 297760), (3722, 266240), (4096, 241930), (4160, 238208), (5120, 193544), (6656, 148880), (7444, 133120), (8192, 120965), (8320, 119104), (9305, 106496), (10240, 96772), (13312, 74440), (14888, 66560), (16640, 59552), (18610, 53248), (20480, 48386), (24193, 40960), (26624, 37220), (29776, 33280)]