208045557

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{107}}^1$

素因数の和:271

約数の個数: 64

約数和(自身を含む): 338411520

約数和(自身を除く): 130365963

約数列:

[1, 3, 9, 23, 27, 31, 69, 93, 101, 107, 207, 279, 303, 321, 621, 713, 837, 909, 963, 2139, 2323, 2461, 2727, 2889, 3131, 3317, 6417, 6969, 7383, 9393, 9951, 10807, 19251, 20907, 22149, 28179, 29853, 32421, 62721, 66447, 72013, 76291, 84537, 89559, 97263, 216039, 228873, 248561, 291789, 335017, 648117, 686619, 745683, 1005051, 1944351, 2059857, 2237049, 3015153, 6711147, 7705391, 9045459, 23116173, 69348519, 208045557]

約数ペア:

[(1, 208045557), (3, 69348519), (9, 23116173), (23, 9045459), (27, 7705391), (31, 6711147), (69, 3015153), (93, 2237049), (101, 2059857), (107, 1944351), (207, 1005051), (279, 745683), (303, 686619), (321, 648117), (621, 335017), (713, 291789), (837, 248561), (909, 228873), (963, 216039), (2139, 97263), (2323, 89559), (2461, 84537), (2727, 76291), (2889, 72013), (3131, 66447), (3317, 62721), (6417, 32421), (6969, 29853), (7383, 28179), (9393, 22149), (9951, 20907), (10807, 19251)]