81287668

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1019}}^1$

素因数の和:1085

約数の個数: 72

約数和(自身を含む): 185582880

約数和(自身を除く): 104295212

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 49, 74, 77, 98, 148, 154, 196, 259, 308, 407, 518, 539, 814, 1019, 1036, 1078, 1628, 1813, 2038, 2156, 2849, 3626, 4076, 5698, 7133, 7252, 11209, 11396, 14266, 19943, 22418, 28532, 37703, 39886, 44836, 49931, 75406, 78463, 79772, 99862, 150812, 156926, 199724, 263921, 313852, 414733, 527842, 549241, 829466, 1055684, 1098482, 1658932, 1847447, 2196964, 2903131, 3694894, 5806262, 7389788, 11612524, 20321917, 40643834, 81287668]

約数ペア:

[(1, 81287668), (2, 40643834), (4, 20321917), (7, 11612524), (11, 7389788), (14, 5806262), (22, 3694894), (28, 2903131), (37, 2196964), (44, 1847447), (49, 1658932), (74, 1098482), (77, 1055684), (98, 829466), (148, 549241), (154, 527842), (196, 414733), (259, 313852), (308, 263921), (407, 199724), (518, 156926), (539, 150812), (814, 99862), (1019, 79772), (1036, 78463), (1078, 75406), (1628, 49931), (1813, 44836), (2038, 39886), (2156, 37703), (2849, 28532), (3626, 22418), (4076, 19943), (5698, 14266), (7133, 11396), (7252, 11209)]