217251675

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{41981}}^1$

素因数の和:42020

約数の個数: 36

約数和(自身を含む): 406049904

約数和(自身を除く): 188798229

約数列:

[1, 3, 5, 9, 15, 23, 25, 45, 69, 75, 115, 207, 225, 345, 575, 1035, 1725, 5175, 41981, 125943, 209905, 377829, 629715, 965563, 1049525, 1889145, 2896689, 3148575, 4827815, 8690067, 9445725, 14483445, 24139075, 43450335, 72417225, 217251675]

約数ペア:

[(1, 217251675), (3, 72417225), (5, 43450335), (9, 24139075), (15, 14483445), (23, 9445725), (25, 8690067), (45, 4827815), (69, 3148575), (75, 2896689), (115, 1889145), (207, 1049525), (225, 965563), (345, 629715), (575, 377829), (1035, 209905), (1725, 125943), (5175, 41981)]