2781123280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{557}}^1\times {\mathrm{4801}}^1$

素因数の和:5384

約数の個数: 80

約数和(自身を含む): 6977459664

約数和(自身を除く): 4196336384

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 557, 1040, 1114, 2228, 2785, 4456, 4801, 5570, 7241, 8912, 9602, 11140, 14482, 19204, 22280, 24005, 28964, 36205, 38408, 44560, 48010, 57928, 62413, 72410, 76816, 96020, 115856, 124826, 144820, 192040, 249652, 289640, 312065, 384080, 499304, 579280, 624130, 998608, 1248260, 2496520, 2674157, 4993040, 5348314, 10696628, 13370785, 21393256, 26741570, 34764041, 42786512, 53483140, 69528082, 106966280, 139056164, 173820205, 213932560, 278112328, 347640410, 556224656, 695280820, 1390561640, 2781123280]

約数ペア:

[(1, 2781123280), (2, 1390561640), (4, 695280820), (5, 556224656), (8, 347640410), (10, 278112328), (13, 213932560), (16, 173820205), (20, 139056164), (26, 106966280), (40, 69528082), (52, 53483140), (65, 42786512), (80, 34764041), (104, 26741570), (130, 21393256), (208, 13370785), (260, 10696628), (520, 5348314), (557, 4993040), (1040, 2674157), (1114, 2496520), (2228, 1248260), (2785, 998608), (4456, 624130), (4801, 579280), (5570, 499304), (7241, 384080), (8912, 312065), (9602, 289640), (11140, 249652), (14482, 192040), (19204, 144820), (22280, 124826), (24005, 115856), (28964, 96020), (36205, 76816), (38408, 72410), (44560, 62413), (48010, 57928)]