15989721880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{40423}}^1$

素因数の和:40505

約数の個数: 128

約数和(自身を含む): 41911603200

約数和(自身を除く): 25921881320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 31, 40, 44, 55, 58, 62, 88, 110, 116, 124, 145, 155, 220, 232, 248, 290, 310, 319, 341, 440, 580, 620, 638, 682, 899, 1160, 1240, 1276, 1364, 1595, 1705, 1798, 2552, 2728, 3190, 3410, 3596, 4495, 6380, 6820, 7192, 8990, 9889, 12760, 13640, 17980, 19778, 35960, 39556, 40423, 49445, 79112, 80846, 98890, 161692, 197780, 202115, 323384, 395560, 404230, 444653, 808460, 889306, 1172267, 1253113, 1616920, 1778612, 2223265, 2344534, 2506226, 3557224, 4446530, 4689068, 5012452, 5861335, 6265565, 8893060, 9378136, 10024904, 11722670, 12531130, 12894937, 13784243, 17786120, 23445340, 25062260, 25789874, 27568486, 36340277, 46890680, 50124520, 51579748, 55136972, 64474685, 68921215, 72680554, 103159496, 110273944, 128949370, 137842430, 145361108, 181701385, 257898740, 275684860, 290722216, 363402770, 399743047, 515797480, 551369720, 726805540, 799486094, 1453611080, 1598972188, 1998715235, 3197944376, 3997430470, 7994860940, 15989721880]

約数ペア:

[(1, 15989721880), (2, 7994860940), (4, 3997430470), (5, 3197944376), (8, 1998715235), (10, 1598972188), (11, 1453611080), (20, 799486094), (22, 726805540), (29, 551369720), (31, 515797480), (40, 399743047), (44, 363402770), (55, 290722216), (58, 275684860), (62, 257898740), (88, 181701385), (110, 145361108), (116, 137842430), (124, 128949370), (145, 110273944), (155, 103159496), (220, 72680554), (232, 68921215), (248, 64474685), (290, 55136972), (310, 51579748), (319, 50124520), (341, 46890680), (440, 36340277), (580, 27568486), (620, 25789874), (638, 25062260), (682, 23445340), (899, 17786120), (1160, 13784243), (1240, 12894937), (1276, 12531130), (1364, 11722670), (1595, 10024904), (1705, 9378136), (1798, 8893060), (2552, 6265565), (2728, 5861335), (3190, 5012452), (3410, 4689068), (3596, 4446530), (4495, 3557224), (6380, 2506226), (6820, 2344534), (7192, 2223265), (8990, 1778612), (9889, 1616920), (12760, 1253113), (13640, 1172267), (17980, 889306), (19778, 808460), (35960, 444653), (39556, 404230), (40423, 395560), (49445, 323384), (79112, 202115), (80846, 197780), (98890, 161692)]