20389541991

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{7459}}^1$

素因数の和:7549

約数の個数: 128

約数和(自身を含む): 38500761600

約数和(自身を除く): 18111219609

約数列:

[1, 3, 7, 13, 17, 19, 21, 31, 39, 51, 57, 91, 93, 119, 133, 217, 221, 247, 273, 323, 357, 399, 403, 527, 589, 651, 663, 741, 969, 1209, 1547, 1581, 1729, 1767, 2261, 2821, 3689, 4123, 4199, 4641, 5187, 6783, 6851, 7459, 7657, 8463, 10013, 11067, 12369, 12597, 20553, 22377, 22971, 29393, 30039, 47957, 52213, 53599, 70091, 88179, 96967, 126803, 130169, 141721, 143871, 156639, 160797, 210273, 231229, 290901, 380409, 390507, 425163, 678769, 693687, 887621, 911183, 992047, 1618603, 1648439, 1842373, 2036307, 2409257, 2662863, 2733549, 2976141, 3005977, 3930893, 4393351, 4855809, 4945317, 5527119, 7227771, 9017931, 11539073, 11792679, 12896611, 13180053, 16864799, 21041839, 27516251, 30753457, 31320341, 34617219, 38689833, 50594397, 51101609, 57113563, 63125517, 74686967, 82548753, 92260371, 93961023, 153304827, 171340689, 219242387, 224060901, 357711263, 399794941, 522808769, 657727161, 970930571, 1073133789, 1199384823, 1568426307, 2912791713, 6796513997, 20389541991]

約数ペア:

[(1, 20389541991), (3, 6796513997), (7, 2912791713), (13, 1568426307), (17, 1199384823), (19, 1073133789), (21, 970930571), (31, 657727161), (39, 522808769), (51, 399794941), (57, 357711263), (91, 224060901), (93, 219242387), (119, 171340689), (133, 153304827), (217, 93961023), (221, 92260371), (247, 82548753), (273, 74686967), (323, 63125517), (357, 57113563), (399, 51101609), (403, 50594397), (527, 38689833), (589, 34617219), (651, 31320341), (663, 30753457), (741, 27516251), (969, 21041839), (1209, 16864799), (1547, 13180053), (1581, 12896611), (1729, 11792679), (1767, 11539073), (2261, 9017931), (2821, 7227771), (3689, 5527119), (4123, 4945317), (4199, 4855809), (4641, 4393351), (5187, 3930893), (6783, 3005977), (6851, 2976141), (7459, 2733549), (7657, 2662863), (8463, 2409257), (10013, 2036307), (11067, 1842373), (12369, 1648439), (12597, 1618603), (20553, 992047), (22377, 911183), (22971, 887621), (29393, 693687), (30039, 678769), (47957, 425163), (52213, 390507), (53599, 380409), (70091, 290901), (88179, 231229), (96967, 210273), (126803, 160797), (130169, 156639), (141721, 143871)]