20295680

素因数分解:

$2^{12}\times 5^1\times {\mathrm{991}}^1$

素因数の和:1020

約数の個数: 52

約数和(自身を含む): 48752832

約数和(自身を除く): 28457152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 991, 1024, 1280, 1982, 2048, 2560, 3964, 4096, 4955, 5120, 7928, 9910, 10240, 15856, 19820, 20480, 31712, 39640, 63424, 79280, 126848, 158560, 253696, 317120, 507392, 634240, 1014784, 1268480, 2029568, 2536960, 4059136, 5073920, 10147840, 20295680]

約数ペア:

[(1, 20295680), (2, 10147840), (4, 5073920), (5, 4059136), (8, 2536960), (10, 2029568), (16, 1268480), (20, 1014784), (32, 634240), (40, 507392), (64, 317120), (80, 253696), (128, 158560), (160, 126848), (256, 79280), (320, 63424), (512, 39640), (640, 31712), (991, 20480), (1024, 19820), (1280, 15856), (1982, 10240), (2048, 9910), (2560, 7928), (3964, 5120), (4096, 4955)]