261520238

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{2767}}^1$

素因数の和:2976

約数の個数: 32

約数和(自身を含む): 461835264

約数和(自身を除く): 200315026

約数列:

[1, 2, 7, 14, 43, 86, 157, 301, 314, 602, 1099, 2198, 2767, 5534, 6751, 13502, 19369, 38738, 47257, 94514, 118981, 237962, 434419, 832867, 868838, 1665734, 3040933, 6081866, 18680017, 37360034, 130760119, 261520238]

約数ペア:

[(1, 261520238), (2, 130760119), (7, 37360034), (14, 18680017), (43, 6081866), (86, 3040933), (157, 1665734), (301, 868838), (314, 832867), (602, 434419), (1099, 237962), (2198, 118981), (2767, 94514), (5534, 47257), (6751, 38738), (13502, 19369)]