1268480

素因数分解:

$2^8\times 5^1\times {\mathrm{991}}^1$

素因数の和:1012

約数の個数: 36

約数和(自身を含む): 3041472

約数和(自身を除く): 1772992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 991, 1280, 1982, 3964, 4955, 7928, 9910, 15856, 19820, 31712, 39640, 63424, 79280, 126848, 158560, 253696, 317120, 634240, 1268480]

約数ペア:

[(1, 1268480), (2, 634240), (4, 317120), (5, 253696), (8, 158560), (10, 126848), (16, 79280), (20, 63424), (32, 39640), (40, 31712), (64, 19820), (80, 15856), (128, 9910), (160, 7928), (256, 4955), (320, 3964), (640, 1982), (991, 1280)]