81193040

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:564

約数の個数: 80

約数和(自身を含む): 198201600

約数和(自身を除く): 117008560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 79, 80, 116, 145, 158, 232, 290, 316, 395, 443, 464, 580, 632, 790, 886, 1160, 1264, 1580, 1772, 2215, 2291, 2320, 3160, 3544, 4430, 4582, 6320, 7088, 8860, 9164, 11455, 12847, 17720, 18328, 22910, 25694, 34997, 35440, 36656, 45820, 51388, 64235, 69994, 91640, 102776, 128470, 139988, 174985, 183280, 205552, 256940, 279976, 349970, 513880, 559952, 699940, 1014913, 1027760, 1399880, 2029826, 2799760, 4059652, 5074565, 8119304, 10149130, 16238608, 20298260, 40596520, 81193040]

約数ペア:

[(1, 81193040), (2, 40596520), (4, 20298260), (5, 16238608), (8, 10149130), (10, 8119304), (16, 5074565), (20, 4059652), (29, 2799760), (40, 2029826), (58, 1399880), (79, 1027760), (80, 1014913), (116, 699940), (145, 559952), (158, 513880), (232, 349970), (290, 279976), (316, 256940), (395, 205552), (443, 183280), (464, 174985), (580, 139988), (632, 128470), (790, 102776), (886, 91640), (1160, 69994), (1264, 64235), (1580, 51388), (1772, 45820), (2215, 36656), (2291, 35440), (2320, 34997), (3160, 25694), (3544, 22910), (4430, 18328), (4582, 17720), (6320, 12847), (7088, 11455), (8860, 9164)]