249890560

素因数分解:

$2^8\times 5^1\times {\mathrm{197}}^1\times {\mathrm{991}}^1$

素因数の和:1209

約数の個数: 72

約数和(自身を含む): 602211456

約数和(自身を除く): 352320896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 197, 256, 320, 394, 640, 788, 985, 991, 1280, 1576, 1970, 1982, 3152, 3940, 3964, 4955, 6304, 7880, 7928, 9910, 12608, 15760, 15856, 19820, 25216, 31520, 31712, 39640, 50432, 63040, 63424, 79280, 126080, 126848, 158560, 195227, 252160, 253696, 317120, 390454, 634240, 780908, 976135, 1268480, 1561816, 1952270, 3123632, 3904540, 6247264, 7809080, 12494528, 15618160, 24989056, 31236320, 49978112, 62472640, 124945280, 249890560]

約数ペア:

[(1, 249890560), (2, 124945280), (4, 62472640), (5, 49978112), (8, 31236320), (10, 24989056), (16, 15618160), (20, 12494528), (32, 7809080), (40, 6247264), (64, 3904540), (80, 3123632), (128, 1952270), (160, 1561816), (197, 1268480), (256, 976135), (320, 780908), (394, 634240), (640, 390454), (788, 317120), (985, 253696), (991, 252160), (1280, 195227), (1576, 158560), (1970, 126848), (1982, 126080), (3152, 79280), (3940, 63424), (3964, 63040), (4955, 50432), (6304, 39640), (7880, 31712), (7928, 31520), (9910, 25216), (12608, 19820), (15760, 15856)]