81857805

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 145355904

約数和(自身を除く): 63498099

約数列:

[1, 3, 5, 15, 17, 23, 51, 69, 85, 115, 255, 289, 345, 391, 821, 867, 1173, 1445, 1955, 2463, 4105, 4335, 5865, 6647, 12315, 13957, 18883, 19941, 33235, 41871, 56649, 69785, 94415, 99705, 209355, 237269, 283245, 321011, 711807, 963033, 1186345, 1605055, 3559035, 4815165, 5457187, 16371561, 27285935, 81857805]

約数ペア:

[(1, 81857805), (3, 27285935), (5, 16371561), (15, 5457187), (17, 4815165), (23, 3559035), (51, 1605055), (69, 1186345), (85, 963033), (115, 711807), (255, 321011), (289, 283245), (345, 237269), (391, 209355), (821, 99705), (867, 94415), (1173, 69785), (1445, 56649), (1955, 41871), (2463, 33235), (4105, 19941), (4335, 18883), (5865, 13957), (6647, 12315)]