19655680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{349}}^1$

素因数の和:385

約数の個数: 88

約数和(自身を含む): 51584400

約数和(自身を除く): 31928720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 349, 352, 440, 512, 640, 698, 704, 880, 1024, 1280, 1396, 1408, 1745, 1760, 2560, 2792, 2816, 3490, 3520, 3839, 5120, 5584, 5632, 6980, 7040, 7678, 11168, 11264, 13960, 14080, 15356, 19195, 22336, 27920, 28160, 30712, 38390, 44672, 55840, 56320, 61424, 76780, 89344, 111680, 122848, 153560, 178688, 223360, 245696, 307120, 357376, 446720, 491392, 614240, 893440, 982784, 1228480, 1786880, 1965568, 2456960, 3931136, 4913920, 9827840, 19655680]

約数ペア:

[(1, 19655680), (2, 9827840), (4, 4913920), (5, 3931136), (8, 2456960), (10, 1965568), (11, 1786880), (16, 1228480), (20, 982784), (22, 893440), (32, 614240), (40, 491392), (44, 446720), (55, 357376), (64, 307120), (80, 245696), (88, 223360), (110, 178688), (128, 153560), (160, 122848), (176, 111680), (220, 89344), (256, 76780), (320, 61424), (349, 56320), (352, 55840), (440, 44672), (512, 38390), (640, 30712), (698, 28160), (704, 27920), (880, 22336), (1024, 19195), (1280, 15356), (1396, 14080), (1408, 13960), (1745, 11264), (1760, 11168), (2560, 7678), (2792, 7040), (2816, 6980), (3490, 5632), (3520, 5584), (3839, 5120)]