87181956

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:873

約数の個数: 72

約数和(自身を含む): 233513280

約数和(自身を除く): 146331324

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 197, 228, 342, 394, 591, 647, 684, 788, 1182, 1294, 1773, 1941, 2364, 2588, 3546, 3743, 3882, 5823, 7092, 7486, 7764, 11229, 11646, 12293, 14972, 22458, 23292, 24586, 33687, 36879, 44916, 49172, 67374, 73758, 110637, 127459, 134748, 147516, 221274, 254918, 382377, 442548, 509836, 764754, 1147131, 1529508, 2294262, 2421721, 4588524, 4843442, 7265163, 9686884, 14530326, 21795489, 29060652, 43590978, 87181956]

約数ペア:

[(1, 87181956), (2, 43590978), (3, 29060652), (4, 21795489), (6, 14530326), (9, 9686884), (12, 7265163), (18, 4843442), (19, 4588524), (36, 2421721), (38, 2294262), (57, 1529508), (76, 1147131), (114, 764754), (171, 509836), (197, 442548), (228, 382377), (342, 254918), (394, 221274), (591, 147516), (647, 134748), (684, 127459), (788, 110637), (1182, 73758), (1294, 67374), (1773, 49172), (1941, 44916), (2364, 36879), (2588, 33687), (3546, 24586), (3743, 23292), (3882, 22458), (5823, 14972), (7092, 12293), (7486, 11646), (7764, 11229)]