204080508905

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{457}}^1\times {\mathrm{941}}^1$

素因数の和:1579

約数の個数: 96

約数和(自身を含む): 309857335200

約数和(自身を除く): 105776826295

約数列:

[1, 5, 7, 13, 35, 49, 65, 91, 149, 245, 455, 457, 637, 745, 941, 1043, 1937, 2285, 3185, 3199, 4705, 5215, 5941, 6587, 7301, 9685, 12233, 13559, 15995, 22393, 29705, 32935, 36505, 41587, 46109, 61165, 67795, 68093, 85631, 94913, 111965, 140209, 207935, 230545, 291109, 340465, 428155, 430037, 474565, 476651, 599417, 701045, 885209, 981463, 1455545, 1822717, 2150185, 2383255, 2997085, 3010259, 3336557, 4426045, 4907315, 5590481, 6196463, 6870241, 9113585, 12759019, 15051295, 16682785, 21071813, 27952405, 30982315, 34351205, 39133367, 43375241, 63795095, 64075513, 89313133, 105359065, 195666835, 216876205, 273933569, 320377565, 446565665, 448528591, 832981669, 1369667845, 2242642955, 3139700137, 4164908345, 5830871683, 15698500685, 29154358415, 40816101781, 204080508905]

約数ペア:

[(1, 204080508905), (5, 40816101781), (7, 29154358415), (13, 15698500685), (35, 5830871683), (49, 4164908345), (65, 3139700137), (91, 2242642955), (149, 1369667845), (245, 832981669), (455, 448528591), (457, 446565665), (637, 320377565), (745, 273933569), (941, 216876205), (1043, 195666835), (1937, 105359065), (2285, 89313133), (3185, 64075513), (3199, 63795095), (4705, 43375241), (5215, 39133367), (5941, 34351205), (6587, 30982315), (7301, 27952405), (9685, 21071813), (12233, 16682785), (13559, 15051295), (15995, 12759019), (22393, 9113585), (29705, 6870241), (32935, 6196463), (36505, 5590481), (41587, 4907315), (46109, 4426045), (61165, 3336557), (67795, 3010259), (68093, 2997085), (85631, 2383255), (94913, 2150185), (111965, 1822717), (140209, 1455545), (207935, 981463), (230545, 885209), (291109, 701045), (340465, 599417), (428155, 476651), (430037, 474565)]