388670821

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1783}}^1$

素因数の和:1969

約数の個数: 32

約数和(自身を含む): 513792000

約数和(自身を除く): 125121179

約数列:

[1, 7, 11, 19, 77, 133, 149, 209, 1043, 1463, 1639, 1783, 2831, 11473, 12481, 19613, 19817, 31141, 33877, 137291, 217987, 237139, 265667, 372647, 1859669, 2608529, 2922337, 5047673, 20456359, 35333711, 55524403, 388670821]

約数ペア:

[(1, 388670821), (7, 55524403), (11, 35333711), (19, 20456359), (77, 5047673), (133, 2922337), (149, 2608529), (209, 1859669), (1043, 372647), (1463, 265667), (1639, 237139), (1783, 217987), (2831, 137291), (11473, 33877), (12481, 31141), (19613, 19817)]