81249520

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{727}}^1$

素因数の和:878

約数の個数: 80

約数和(自身を含む): 207986688

約数和(自身を除く): 126737168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 127, 176, 220, 254, 440, 508, 635, 727, 880, 1016, 1270, 1397, 1454, 2032, 2540, 2794, 2908, 3635, 5080, 5588, 5816, 6985, 7270, 7997, 10160, 11176, 11632, 13970, 14540, 15994, 22352, 27940, 29080, 31988, 39985, 55880, 58160, 63976, 79970, 92329, 111760, 127952, 159940, 184658, 319880, 369316, 461645, 639760, 738632, 923290, 1015619, 1477264, 1846580, 2031238, 3693160, 4062476, 5078095, 7386320, 8124952, 10156190, 16249904, 20312380, 40624760, 81249520]

約数ペア:

[(1, 81249520), (2, 40624760), (4, 20312380), (5, 16249904), (8, 10156190), (10, 8124952), (11, 7386320), (16, 5078095), (20, 4062476), (22, 3693160), (40, 2031238), (44, 1846580), (55, 1477264), (80, 1015619), (88, 923290), (110, 738632), (127, 639760), (176, 461645), (220, 369316), (254, 319880), (440, 184658), (508, 159940), (635, 127952), (727, 111760), (880, 92329), (1016, 79970), (1270, 63976), (1397, 58160), (1454, 55880), (2032, 39985), (2540, 31988), (2794, 29080), (2908, 27940), (3635, 22352), (5080, 15994), (5588, 14540), (5816, 13970), (6985, 11632), (7270, 11176), (7997, 10160)]