81182720

素因数分解:

$2^{14}\times 5^1\times {\mathrm{991}}^1$

素因数の和:1024

約数の個数: 60

約数和(自身を含む): 195029184

約数和(自身を除く): 113846464

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, 8192, 9910, 10240, 15856, 16384, 19820, 20480, 31712, 39640, 40960, 63424, 79280, 81920, 126848, 158560, 253696, 317120, 507392, 634240, 1014784, 1268480, 2029568, 2536960, 4059136, 5073920, 8118272, 10147840, 16236544, 20295680, 40591360, 81182720]

約数ペア:

[(1, 81182720), (2, 40591360), (4, 20295680), (5, 16236544), (8, 10147840), (10, 8118272), (16, 5073920), (20, 4059136), (32, 2536960), (40, 2029568), (64, 1268480), (80, 1014784), (128, 634240), (160, 507392), (256, 317120), (320, 253696), (512, 158560), (640, 126848), (991, 81920), (1024, 79280), (1280, 63424), (1982, 40960), (2048, 39640), (2560, 31712), (3964, 20480), (4096, 19820), (4955, 16384), (5120, 15856), (7928, 10240), (8192, 9910)]