28857.000000

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 24

約数和(自身を含む): 1145760

約数和(自身を除く): 538444

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 131, 244, 262, 524, 1159, 2318, 2489, 4636, 4978, 7991, 9956, 15982, 31964, 151829, 303658, 607316]

約数ペア:

[(1, 607316), (2, 303658), (4, 151829), (19, 31964), (38, 15982), (61, 9956), (76, 7991), (122, 4978), (131, 4636), (244, 2489), (262, 2318), (524, 1159)]