7871985

素因数分解:

$3^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 96

約数和(自身を含む): 16773120

約数和(自身を除く): 8901135

約数列:

[1, 3, 5, 9, 11, 15, 19, 27, 31, 33, 45, 55, 57, 81, 93, 95, 99, 135, 155, 165, 171, 209, 243, 279, 285, 297, 341, 405, 465, 495, 513, 589, 627, 837, 855, 891, 1023, 1045, 1215, 1395, 1485, 1539, 1705, 1767, 1881, 2511, 2565, 2673, 2945, 3069, 3135, 4185, 4455, 4617, 5115, 5301, 5643, 6479, 7533, 7695, 8835, 9207, 9405, 12555, 13365, 15345, 15903, 16929, 19437, 23085, 26505, 27621, 28215, 32395, 37665, 46035, 47709, 50787, 58311, 79515, 82863, 84645, 97185, 138105, 143127, 174933, 238545, 253935, 291555, 414315, 524799, 715635, 874665, 1574397, 2623995, 7871985]

約数ペア:

[(1, 7871985), (3, 2623995), (5, 1574397), (9, 874665), (11, 715635), (15, 524799), (19, 414315), (27, 291555), (31, 253935), (33, 238545), (45, 174933), (55, 143127), (57, 138105), (81, 97185), (93, 84645), (95, 82863), (99, 79515), (135, 58311), (155, 50787), (165, 47709), (171, 46035), (209, 37665), (243, 32395), (279, 28215), (285, 27621), (297, 26505), (341, 23085), (405, 19437), (465, 16929), (495, 15903), (513, 15345), (589, 13365), (627, 12555), (837, 9405), (855, 9207), (891, 8835), (1023, 7695), (1045, 7533), (1215, 6479), (1395, 5643), (1485, 5301), (1539, 5115), (1705, 4617), (1767, 4455), (1881, 4185), (2511, 3135), (2565, 3069), (2673, 2945)]