217900815

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{593}}^1$

素因数の和:760

約数の個数: 64

約数和(自身を含む): 406467072

約数和(自身を除く): 188566257

約数列:

[1, 3, 5, 11, 15, 17, 33, 51, 55, 85, 131, 165, 187, 255, 393, 561, 593, 655, 935, 1441, 1779, 1965, 2227, 2805, 2965, 4323, 6523, 6681, 7205, 8895, 10081, 11135, 19569, 21615, 24497, 30243, 32615, 33405, 50405, 73491, 77683, 97845, 110891, 122485, 151215, 233049, 332673, 367455, 388415, 554455, 854513, 1165245, 1320611, 1663365, 2563539, 3961833, 4272565, 6603055, 12817695, 14526721, 19809165, 43580163, 72633605, 217900815]

約数ペア:

[(1, 217900815), (3, 72633605), (5, 43580163), (11, 19809165), (15, 14526721), (17, 12817695), (33, 6603055), (51, 4272565), (55, 3961833), (85, 2563539), (131, 1663365), (165, 1320611), (187, 1165245), (255, 854513), (393, 554455), (561, 388415), (593, 367455), (655, 332673), (935, 233049), (1441, 151215), (1779, 122485), (1965, 110891), (2227, 97845), (2805, 77683), (2965, 73491), (4323, 50405), (6523, 33405), (6681, 32615), (7205, 30243), (8895, 24497), (10081, 21615), (11135, 19569)]