18916324

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1$

素因数の和:129

約数の個数: 72

約数和(自身を含む): 42262080

約数和(自身を除く): 23345756

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 37, 38, 62, 74, 76, 124, 133, 148, 217, 259, 266, 434, 518, 532, 589, 703, 868, 961, 1036, 1147, 1178, 1406, 1922, 2294, 2356, 2812, 3844, 4123, 4588, 4921, 6727, 8029, 8246, 9842, 13454, 16058, 16492, 18259, 19684, 21793, 26908, 32116, 35557, 36518, 43586, 71114, 73036, 87172, 127813, 142228, 152551, 248899, 255626, 305102, 497798, 511252, 610204, 675583, 995596, 1351166, 2702332, 4729081, 9458162, 18916324]

約数ペア:

[(1, 18916324), (2, 9458162), (4, 4729081), (7, 2702332), (14, 1351166), (19, 995596), (28, 675583), (31, 610204), (37, 511252), (38, 497798), (62, 305102), (74, 255626), (76, 248899), (124, 152551), (133, 142228), (148, 127813), (217, 87172), (259, 73036), (266, 71114), (434, 43586), (518, 36518), (532, 35557), (589, 32116), (703, 26908), (868, 21793), (961, 19684), (1036, 18259), (1147, 16492), (1178, 16058), (1406, 13454), (1922, 9842), (2294, 8246), (2356, 8029), (2812, 6727), (3844, 4921), (4123, 4588)]