205315201

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 264685568

約数和(自身を除く): 59370367

約数列:

[1, 7, 13, 31, 73, 91, 217, 403, 511, 949, 997, 2263, 2821, 6643, 6979, 12961, 15841, 29419, 30907, 72781, 90727, 205933, 216349, 401791, 509467, 946153, 2256211, 2812537, 6623071, 15793477, 29330743, 205315201]

約数ペア:

[(1, 205315201), (7, 29330743), (13, 15793477), (31, 6623071), (73, 2812537), (91, 2256211), (217, 946153), (403, 509467), (511, 401791), (949, 216349), (997, 205933), (2263, 90727), (2821, 72781), (6643, 30907), (6979, 29419), (12961, 15841)]