28907508

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:253

約数の個数: 96

約数和(自身を含む): 80898048

約数和(自身を除く): 51990540

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 71, 74, 84, 111, 131, 142, 148, 213, 222, 259, 262, 284, 393, 426, 444, 497, 518, 524, 777, 786, 852, 917, 994, 1036, 1491, 1554, 1572, 1834, 1988, 2627, 2751, 2982, 3108, 3668, 4847, 5254, 5502, 5964, 7881, 9301, 9694, 10508, 11004, 14541, 15762, 18389, 18602, 19388, 27903, 29082, 31524, 33929, 36778, 37204, 55167, 55806, 58164, 65107, 67858, 73556, 101787, 110334, 111612, 130214, 135716, 195321, 203574, 220668, 260428, 344137, 390642, 407148, 688274, 781284, 1032411, 1376548, 2064822, 2408959, 4129644, 4817918, 7226877, 9635836, 14453754, 28907508]

約数ペア:

[(1, 28907508), (2, 14453754), (3, 9635836), (4, 7226877), (6, 4817918), (7, 4129644), (12, 2408959), (14, 2064822), (21, 1376548), (28, 1032411), (37, 781284), (42, 688274), (71, 407148), (74, 390642), (84, 344137), (111, 260428), (131, 220668), (142, 203574), (148, 195321), (213, 135716), (222, 130214), (259, 111612), (262, 110334), (284, 101787), (393, 73556), (426, 67858), (444, 65107), (497, 58164), (518, 55806), (524, 55167), (777, 37204), (786, 36778), (852, 33929), (917, 31524), (994, 29082), (1036, 27903), (1491, 19388), (1554, 18602), (1572, 18389), (1834, 15762), (1988, 14541), (2627, 11004), (2751, 10508), (2982, 9694), (3108, 9301), (3668, 7881), (4847, 5964), (5254, 5502)]