399707978

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{401}}^1\times {\mathrm{1543}}^1$

素因数の和:1982

約数の個数: 32

約数和(自身を含む): 670343040

約数和(自身を除く): 270635062

約数列:

[1, 2, 17, 19, 34, 38, 323, 401, 646, 802, 1543, 3086, 6817, 7619, 13634, 15238, 26231, 29317, 52462, 58634, 129523, 259046, 498389, 618743, 996778, 1237486, 10518631, 11756117, 21037262, 23512234, 199853989, 399707978]

約数ペア:

[(1, 399707978), (2, 199853989), (17, 23512234), (19, 21037262), (34, 11756117), (38, 10518631), (323, 1237486), (401, 996778), (646, 618743), (802, 498389), (1543, 259046), (3086, 129523), (6817, 58634), (7619, 52462), (13634, 29317), (15238, 26231)]