1687959

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1$

素因数の和:261

約数の個数: 40

約数和(自身を含む): 3116960

約数和(自身を除く): 1429001

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 229, 273, 351, 567, 687, 819, 1053, 1603, 2061, 2457, 2977, 4809, 6183, 7371, 8931, 14427, 18549, 20839, 26793, 43281, 62517, 80379, 129843, 187551, 241137, 562653, 1687959]

約数ペア:

[(1, 1687959), (3, 562653), (7, 241137), (9, 187551), (13, 129843), (21, 80379), (27, 62517), (39, 43281), (63, 26793), (81, 20839), (91, 18549), (117, 14427), (189, 8931), (229, 7371), (273, 6183), (351, 4809), (567, 2977), (687, 2457), (819, 2061), (1053, 1603)]