20113280

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2857}}^1$

素因数の和:2887

約数の個数: 64

約数和(自身を含む): 52472880

約数和(自身を除く): 32359600

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, 320, 352, 440, 640, 704, 880, 1408, 1760, 2857, 3520, 5714, 7040, 11428, 14285, 22856, 28570, 31427, 45712, 57140, 62854, 91424, 114280, 125708, 157135, 182848, 228560, 251416, 314270, 365696, 457120, 502832, 628540, 914240, 1005664, 1257080, 1828480, 2011328, 2514160, 4022656, 5028320, 10056640, 20113280]

約数ペア:

[(1, 20113280), (2, 10056640), (4, 5028320), (5, 4022656), (8, 2514160), (10, 2011328), (11, 1828480), (16, 1257080), (20, 1005664), (22, 914240), (32, 628540), (40, 502832), (44, 457120), (55, 365696), (64, 314270), (80, 251416), (88, 228560), (110, 182848), (128, 157135), (160, 125708), (176, 114280), (220, 91424), (320, 62854), (352, 57140), (440, 45712), (640, 31427), (704, 28570), (880, 22856), (1408, 14285), (1760, 11428), (2857, 7040), (3520, 5714)]