81332560

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:380

約数の個数: 80

約数和(自身を含む): 195987456

約数和(自身を除く): 114654896

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 97, 188, 194, 223, 235, 376, 388, 446, 470, 485, 752, 776, 892, 940, 970, 1115, 1552, 1784, 1880, 1940, 2230, 3568, 3760, 3880, 4460, 4559, 7760, 8920, 9118, 10481, 17840, 18236, 20962, 21631, 22795, 36472, 41924, 43262, 45590, 52405, 72944, 83848, 86524, 91180, 104810, 108155, 167696, 173048, 182360, 209620, 216310, 346096, 364720, 419240, 432620, 838480, 865240, 1016657, 1730480, 2033314, 4066628, 5083285, 8133256, 10166570, 16266512, 20333140, 40666280, 81332560]

約数ペア:

[(1, 81332560), (2, 40666280), (4, 20333140), (5, 16266512), (8, 10166570), (10, 8133256), (16, 5083285), (20, 4066628), (40, 2033314), (47, 1730480), (80, 1016657), (94, 865240), (97, 838480), (188, 432620), (194, 419240), (223, 364720), (235, 346096), (376, 216310), (388, 209620), (446, 182360), (470, 173048), (485, 167696), (752, 108155), (776, 104810), (892, 91180), (940, 86524), (970, 83848), (1115, 72944), (1552, 52405), (1784, 45590), (1880, 43262), (1940, 41924), (2230, 36472), (3568, 22795), (3760, 21631), (3880, 20962), (4460, 18236), (4559, 17840), (7760, 10481), (8920, 9118)]