257978404

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{317}}^1\times {\mathrm{6563}}^1$

素因数の和:6915

約数の個数: 24

約数和(自身を含む): 467566848

約数和(自身を除く): 209588444

約数列:

[1, 2, 4, 31, 62, 124, 317, 634, 1268, 6563, 9827, 13126, 19654, 26252, 39308, 203453, 406906, 813812, 2080471, 4160942, 8321884, 64494601, 128989202, 257978404]

約数ペア:

[(1, 257978404), (2, 128989202), (4, 64494601), (31, 8321884), (62, 4160942), (124, 2080471), (317, 813812), (634, 406906), (1268, 203453), (6563, 39308), (9827, 26252), (13126, 19654)]