19980857512

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{876661}}^1$

素因数の和:876722

約数の個数: 64

約数和(自身を含む): 47970944640

約数和(自身を除く): 27990087128

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 37, 44, 56, 74, 77, 88, 148, 154, 259, 296, 308, 407, 518, 616, 814, 1036, 1628, 2072, 2849, 3256, 5698, 11396, 22792, 876661, 1753322, 3506644, 6136627, 7013288, 9643271, 12273254, 19286542, 24546508, 32436457, 38573084, 49093016, 64872914, 67502897, 77146168, 129745828, 135005794, 227055199, 259491656, 270011588, 356801027, 454110398, 540023176, 713602054, 908220796, 1427204108, 1816441592, 2497607189, 2854408216, 4995214378, 9990428756, 19980857512]

約数ペア:

[(1, 19980857512), (2, 9990428756), (4, 4995214378), (7, 2854408216), (8, 2497607189), (11, 1816441592), (14, 1427204108), (22, 908220796), (28, 713602054), (37, 540023176), (44, 454110398), (56, 356801027), (74, 270011588), (77, 259491656), (88, 227055199), (148, 135005794), (154, 129745828), (259, 77146168), (296, 67502897), (308, 64872914), (407, 49093016), (518, 38573084), (616, 32436457), (814, 24546508), (1036, 19286542), (1628, 12273254), (2072, 9643271), (2849, 7013288), (3256, 6136627), (5698, 3506644), (11396, 1753322), (22792, 876661)]